Water leak - Passenger side

[vhukasa]

After parking in heavy rain for 3 days, I found that the passenger side (front) had a 1.5 inch pool of water. (front right side). Went to the body shop did the flood test, and couldn't find the leak. Marker lights were RTV'd previously. Flooded the Sunroof,marker lights,windshield,cowl,doors, everything for 2 hours and couldn't find any leak. Any suggestions?

[MasterMechanic]

possible sunroof channels blocked. do you park under a tree that is loosing some leaves. there was several bulletins for re-routing sunroof drains. also the water drain ducks may be blocked there are five in total. are there any aftermarket products installed that may have re-routed water a different direction long the weatherstripping. i can go on all day there are several key spots to pin point. if you need inspection and repair i would be happy to help. cheers