Got an '80 Cherokee Golden Eagle, 360 and 4-sp. Looking to get some ideas on where to look for a neusance water leak. When driven in rain, water leaks into the passenger side foot-well, comes down through the heater vent. I'm guessing a weep hole in the cowl area, but it really doesn't leak when it just sits while it rains. We thought it was in the wheel well, and tries sealing it with undercoateing and roofing tar, but didn't work. I heard this is a common thing with these trucks. Any one else?