Footwell Leak & AC Drain Clip Help

[dav32]

Hi all

I noticed a bit of dampness in my rear passenger side carpet. Checked both doors and front drains under the scuttle and all looked ok. Lifted the carpet a bit to see if I could dry it out but the foam was actually holding a lot more water than I expected, so I removed the entire carpet so could get it done properly.

While the carpets out, it's giving me a good opportunity to see where the water is coming in from. I did take out the AC drain pipe previously on the passenger side, but I had broken the clip a bit which holds it securely at the time, but had done a DIY fix to keep it in place. I don't think the original leak was coming from here, but I may have dislodged it a bit while removing the carpet and there's a tiny bit of water seeping out of here now as a result. I have ordered a new pipe, and sealed it again for now, but I can't seem to find the clip that secures it into its frame anywhere and it's not listed on the parts diagram.

Does anyone know if this should come with the drain pipe 8K0260113?
Or where/how to get a new one otherwise? Parts diagrams don't list anything there, and the numbers stamped on it don't seem to lead me to anything when I search online. They seem to be 350112-a3 , 0112947a and pa66-gf15

Secondly, the main leak seems to be coming in from behind the rubber section which wraps up onto the footwell/bulkhead area, beside the fuse box in passenger footwell. I have checked the plenum drains again, cabin filter is dry but changed it anyways as was dirty,and also removed the washer reservoir pipe and air intake into blower motor area to check there, and cleaned up the seals and reseated. Rubber seals on the air intake looked ok, scuttle panel seemed slightly loose so I clipped it in fully, but everything seems ok. Put everything back together, ran a test with water and it seemed to not come out from behind the rubber, but the next morning then when I got into the car there was some water there again, so it obviously seeps or drips in very slowly.

Any ideas as to the most likely path for this to be taking?
I don't really want to try take more of the front apart inside like glovebox and blower or peel back the rubber if it's a simple fix. I was thinking a bit of sealant around the air intake rubber as a test, but don't want to be making a mess when it's not 100% that, but I can't see anywhere else where it could be dripping in from around that area!

Pictures attached for reference
Thanks in advance