I don't remember ever having this issue last season, but about a week ago I got out the Kreepy Krauly out for the first time in quite a few months and it will not stay on the pool floor at all. I tried pushing it to the bottom with a pole hoping it would catch the bottom with suction and stay there, but it just lift back off the bottom after a minute and then just floats around suspended in the water and does nothing to clean the bottom. Is there something I can try to fix this? Thanks