Having spent the last 90 + days in our Lexington, here are some items you might want to check. I have had 4 water leaks. 2 plumbing & 2 caulking. First check all screws for tightness!! The caps that on the back of my rig , all screws were not tight! Loose bolt on receiver hitch. When checking tightness of screws on the strip between the roof & side wall. See pictures 7 screws were snapped off with with just the head laying in the hole. rain water got into rig! See picture of strips
overlapping one another.
What clauk is there, I put on. Had a leak on the stove vent. Bad clauk job & tighting of screws. In fact check all clauking. I found compartments were not clauked good enough when veiw from underneath the coach. Shine a flashlight around the edges to check for light shinning through. Or drive in the rain & see how much water you get in the compartments!
I had a serious water leak where the city water comes in the rig. Look at the picture. That type of connection IS NOT DESIGNED FOR A HOSE CLAMP! There is just a small area for the hose clamp to clamp down on. I would not subject these connections to any water pressure higher than 50 lbs?