Fixed Cap Leak
Dago Dan...I had a mysterious leak that was dumping gallons of water in my lap when I moved it. Had it back to the dealer several times with no results...they were just shotgunning all the seams hoping to find it. Finally, I took ownership of "their" problem, and ultimately found out that one of those little spouts that directs water away from the side of the RV had been damaged and created a virtually invisible crack that leaked like a sieve when the front end was down hill. I pulled the little spout backwards, and then it revealed the crack between it and the cap. I bought some marine grade epoxy, and molded a contoured repair, and that fixed it. If your RV has those little spouts, check em out...
BTW...since I took ownership of the problem, I went ahead and drilled a 3/8" hole under the bottom of the cap on each side so that water would drain out instead of in my lap, and to help any moisture dry out. I went to and Ace Hardware store, and found some perfect 3/8" plugs to reseal the holes when everything looks good.