Cab leak mystery.

[Barbecue]

Hey, all.

I've had a leak in my cab as of late which seems to have somehow mysteriously fixed itself. Just wondering if if you guys wouldn't mind sharing your thoughts on my hypothesis or similar experiences.

Background: bodywork done approx 8 months ago which included removal of the windshield and new metal in windshield opening. Driver's door also removed during this process (wasn't hung very well). After returning home and washing my freshly painted truck, I noticed a fair amount of water on the driver's floor mat. I added additional butyl sealer around the windshield and under the driver's side drip rail (wasn't tight to the cab) but still the leak persisted. On rainy days it leaked a bit, but worst when washing. Fast forward until last month, still leaking a bit. Determined that leak was coming from inside the dash, up high, likely somewhere close to where the A-Pillar descends.

Now, we've had a fair amount of rain as of late, but the truck hasn't leaked at all. Washed the truck yesterday, making sure to dump very heavy amounts of water on the windshield, roof, and in the cowl while constantly checking inside for water - no resulting water inside the cab. It is as though the leak somehow has fixed itself!

My hypothesis is that somehow a drain hole somewhere may have been plugged with heavy dust and grit from the body work and the resultant lack of draining caused an overflow of a drain channel leading to the water presenting itself in the cab. Is it possible that this blockage could have cleared itself resulting in the "fix"? Thoughts?

Thanks in advance; I know this one is a bit out there...