I have been chasing a wet footwell on the passengers side for months.
resealed windscreen,checked door seals,cleaned a/c drains with no success.
Finally found that with the mud flaps removed and steel cill protection pipes fitted ,the water was pumping through and under the doors and this way going up into the door seals with enough pressure to force through.
Fitted flaps and leak gone,what a bloody relief.
regards reciprovac