No wet carpets is a good thing, should mean youve avoided any chance of mould and smell! (Thankfully I think I have too). re: bulkhead seam - there's a few pictures I took a little way back in the thread that highlight the area, and a couple back from that is another photo with a yellow arrow of an example where the hole is more pronounced than on mine. I can't be 100% certain whether water was coming in from the bonnet release, the barely visible gap in the bulkhead or due to the windscreen sealing strip - but I know that sorting the strip helps water funnel properly down to the engine bay end of the scuttle; and that there is a "deflector" at the bottom of the windscreen that channels water almost directly onto the bonnet release cable grommet (dodgy design but perhaps it would've been too close to curves in the metal to fit elsewhere!). I should also point out that at some stage, I had so much water coming in that the rear drivers' side footwell got just as bad, if not more waterlogged than the front - hard to believe so much water could be coming in like this but it would support my theory about the windscreen sealing strips potentially letting water into the A panel and then down the centre pillar and back into the rear footwell. This would be more pronounced when driving into rain, I expect.
Alex