Need advice on where to look. 2006 Itasca Meridian has a water leak on the righthand side under the floor above the propane tank. I have taken the peek a boo plate off and see what looks like to be the grey and black holding tanks. Last weekend when we pulled off the pad water was just pouring out of the top of the door, went and looked in the bathroom and floor was wet. Today I pulled off the pad did the same thing ... not as much water coming out and not on the floor. Did the same routine, back flushed the black tank and added water to the fresh water tank by city fill. The water that comes out looks and feels to be fresh water. How do you get to the lines and fittings to check for loose fitting or cracked line?