I have a Dolphin Dynamic automatic pool cleaner with a remote, last summer we noticed the water level dropping about an inch in a 3-5 day period...we looked around and found no obvious holes or plumbing leaks on the pool equipment, so we had to have a diver with a sonar device in the pool to locate the problem, after running the sonar in the pool, they were able to find to tiny slits were the wall and floor meet in the pool. Now I have called the manufacture but they are hopeless...Has anyone had a problem were a robot cleaner damages a liner??? I have noticed this model is no-longer on their website, yet the product can still be found at many stores including Costco...