UPDATE (8/24): I was starting to think I was going crazy, they could not find the leak. They put the truck on 18” blocks to simulate nose down like it was at the time of the leak, removed panels and headliner, and let water run over the entire truck for 2 hours - nothing from anything roof, rear glass, front glass, firewall, doors! But today
the leak has finally been found! It is at a body seam under the windshield on the lower drivers side. The question that remains is is it the seal of the windshield or the seal of the body seam? They are removing the windshield to figure out and reseal all of it. Only problem is if they break the windshield, it’s 5 days to get a new one in. Oh well, at least no more leaks!!!