hi fast eddie
I have a van exactly like yours. had it about a year now. Doing some mods and tried to find out why leisure battery was not charging for engine. Turns out previous owner has cut wire from ignition! Anyway, in finding this out I took out the front carpet which to my horror was soaking underneath. I'm wondering if yours is the same which is why you need a new carpet. I suspect my leak is coming from drivers door frame which appears to be a bit bent.