BigTed

Skoda superb estate 2015 - one of the last MkII ones. Have a rainwater leak, passenger side footwells sodden front and back. Drivers side is dry. I've cleared the drainage ports under the scuttle cover under the windscreen. These were partially blocked with leaf / tree debris, so I assumed that would take care of things. It hasn't - are there any other things to check that might be the cause of rainwater getting inside? Thanks for any advice.

Changing the battery on my superb, I dropped the bolt that clamps the battery tray into the engine bay. Does anyone know, or know where I can get, the specs of this bolt? It took a 13mm socket. I could try and take the plastic undertray off and have a better look for it, but can't easily get under the car. Is this a simple thing to do? Thanks for any advice. Bolt goes in the hole in the middle of photo