deepfat

I know in your original post you stated the cheaters looked OK (your the one!) but are the windows adjusted correctly?, before pulling the snorkel or attempting to adjust the windows I would try to confirm where the water is coming from. Talc on the door panels and seals may show via the rivulet marks if the door/windows are watertight. I changed my early inlet box for the snorkel and if I recall correctly with the glove box out (easy job) there was quite a bit of room (no AB or AC) so you could possibly stuff some rag/paper towel around the underneath of the snorkel to see if that's the prob, I think stuffing it under the glove box risks it wicking up from the carpet and giving a false reading.
IMHO adjusting the windows is not a skill but an art so before that Da Vinci moment happens stock up on wine/anti depressants as required.

I keep mine outside and went thru all this in the first year of ownership and it was "flipping" trying to say the least. I have a full cover which I use during really bad weather but worry about the damp air trapped under it so most of the time I use just a hood cover and air the interior when poss. My experience is my car although normally watertight can with biblical rain and wind in the wrong direction leak and parking end on to prevailing wind is best.