It has been a long time since I have updated this thread. My Caddy has not been forgotten, but it has largely been abandoned in favour of my Ibiza project (the SEAT variety, not a Balearic housing development). The Ibiza is now finally MOTed and in use, so I can turn some attention back to the Caddy. The pick-up has been enjoying the comforts of my garage workshop for a while because it is far from watertight. If it is parked out in the rain, both the passenger side footwell and the rear load bed fill with water. The windscreen seal is the obvious suspect for the wet carpet in the cab, on which more later, but the route for the water to get into the back was less obvious, given that it is rarely left without the tonneau cover in place. Suspicion fell on the front corners of the load area, where the ‘hockey stick’ top trims had been cut to finish more or less level with the cab back rather than extending across the B-pillar as standard. This appeared to have left a route for the water to get past the end of the trims and into the back, which warranted further investigation. Neither the side nor the rear top trims had ever been fitted particularly well in place. With the side pieces I had resorted to putting a couple of rivnuts in the top of each body side and screwing the trims down, which kept them in situ but was pretty unsatisfactory. The trim at the top of the tailgate had always sat high at the offside end, and whilst it did not obviously contribute to the water ingress it was worth looking at whilst the sides were being addressed. When I removed the tailgate top trim I discovered that the flange on the tailgate onto which it slots was folded over at the offside end, which was preventing the trim from sitting properly in place, and the captive bolt at that end was absent from its (broken) mounting, suggesting that possibly a previous owner had over-tightened the nut in an attempt to overcome the obstruction caused by the fold in the flange. I had a couple of used spare sets of trims in the shed, which were complete (as in not obviously broken or butchered) although not great cosmetically, so I selected the best set to trial fit. It became immediately apparent that the trimmed shape at the front of the side trims had masked the fact that they had not been located properly. I located the front of the trims onto their mounting flanges, then gave them each a couple of gentle taps with a rubber mallet on the rear corner to position them flush against the cab back before applying the mallet all along the top to ease them down to where they are supposed to be. The original parts had never fitted so well, and the gap at the front corner is no more. The folded mounting flange at the top of the tailgate was easily rectified via judicious use of a set of mole grips, after which the replacement trim sat neatly where it is supposed to. Now I knew the spare set would fit properly, I could turn my attention to the aesthetics. When I fitted the non-standard tonneau, I located the press studs on the top trims by progressively pulling the tonneau into position and drilling a hole for a stud so it lined-up with the other half of the fastener on the cover. It was not a massively professional (or patient) method, although the end result had looked OK. With the trims off the Caddy, however, it was clear that the press studs were neither particularly well aligned nor exactly evenly spaced. Now I decided to do better. I applied some masking tape to the outside face of each of the trims, and marked a straight line for the studs to follow at the correct depth for the tonneau to fit snugly. With the side trims I fitted them in place temporarily to give a location for the front press stud, then marked locations for the others at even intervals along the line. For the tailgate trim I measured out from the centre to the required locations for the end studs, then marked the others at even intervals in-between. Once I had drilled all of the new holes, only two of which corresponded with existing holes in the trims, I marked them all with red paint to show which were the ‘right’ ones, as the trims now had a lot of holes in them. The trims I had chosen to use had at some stage had the ‘goalpost’ style mountings for an original tonneau, and subsequently had another set of holes for press studs. All of these ‘extra’ holes would be invisible with the tonneau in place, but I had a cunning plan to deal with them. I had used a 2.5mm bit to drill the new holes, and I realised that I had some black plastic drive rivets which had a central shaft of very similar diameter. A trial fit confirmed that these handy little nylon cylinders were a perfect fit for most of the unwanted holes, requiring a couple of taps with a mallet to get them in place, and being nigh-on impossible to dislodge thereafter, so I set-to cutting a load of drive rivet centres in half, tapping them into place, and putting a dab of araldite on the back to be absolutely sure they would stay in place. Both replacement side trims had a small hole in the top surface by the rear corner, almost certainly where a screw had been used to keep them in place. I could not use the same technique to fill these holes, as the top surface of the trims is too thin. Instead I drilled the holes out and tapped them for M6, so that I could screw (and glue) black nylon number plate fixing screws in from the underside. Once the glue was set I trimmed the thread down to the level of the top surface of the trim. Various clamps, and judicious application of a heat gun, enabled me to correct a few places where the trims were mis-shapen, and then a bit of sanding further improved the look of the now-filled holes before priming and painting. I could have saved myself a lot of time and effort by using filler in all of the unwanted holes rather than faffing about finding bits of black plastic to glue into place, but I decided this solution would be more durable for when I am using my pick-up for its intended purpose. I do not want to have to worry about cracks appearing in the filler when things are (inevitably) dropped onto the top trims. Only time will tell whether my efforts have been worthwhile. Whilst the top trims were off, I decided to give the checkerplate ‘shelf’ and additional side rails a couple of coats of paint. I had some Hammerite black satin so that was what I used. Once the top trims are eventually back on this should have it looking much smarter in the back.