I've got an intermittent issue with my Speakers - my R/L Speaker sounds like it is shorting out at times, and when it does it knocks the other speakers out in time with the beats of some tracks - i've found that by setting the Fade to F3 that i don't get the problem with the rear speaker, but then i get a lot more vibration rattles from my F/L Doorcard instead...

So, i want to know how i can get the doorcards off (without breaking anything!) so that i can have a look at whats going on and try to stop the rattles and see if there are any obvious problems as to why the rear speaker drops out randomly

It so intermittent, i have doubts that the system would play up if i took it to a dealer to have a look

There is a guide on here by Humsk.

Found it. http://briskoda.net/ice-security-insurance/how-remove-octy-ii-door-cards-speaker-sizes/51291/

I have done it and it is quite straightforward. Make sure you buy some spare green clips as you will probably break some, unless you are very lucky. They are about 7p each.