I have a 1991 Class C motorhome pictured on my profile, the bunk windows leak depending how I am level and if I park leaning to the left it comes thru the hole I poked into the ceiling to channel the water, so it leaks both overhead bunk windows and if I lean to the left it leaks thru the roof, how do I find out where the source of the leaks are ?? without tearing off the ceiling, I have rolled a new roof on with rubber Gold Seal which has allowed no other leaking to the coach thanks, Jan