I've had water leaks in the shower for a very long time. At the rally the company that supplys Heartland with the shower enclosures was there doing a seminar. I explained my situation to them and they came over to the trailer and found that one of the panels was not snapped into place and there was no set screw to hold it once they snapped it back. They fixed it and showed me some weak points where to use clear sylicone caulk. I have been leak free, knock on wood !! O BTW, they say to only caulk from the outside, never on the inside of the shower.