on 2 of my gen1's, I had a leak that I could not find at first. what I did was use Spray Away foam glass cleaner on the inside of the window seal and then used the air compressor and ran it around the seal. What I found out surprised me. It was not leaking where the seal meets the metal, but where the glass meets the seal. I have no idea why I could never find it using the hose\water trick and it only leaked when the rig was parked. All 4 corners were leaking. I sealed them up and had no more issues.

'88 Raider. 2.6L dead...2.4L swap in progress, AT, 33's, 2 bouncy seat,AC, CC, 2.25 exh, 2" Tbar, 2" BL, rear DB, rear LSD,4.90's, SW hubs,gen2 uca's, KYB shocks, snorkel, elec fan, MSD.

'99 chev k3500 crewcab
'15 Subaru XV
'03 BMW i325