I have a 15 x 30 pool that was setup last spring. This spring when I opened it, I have some really bad washouts from the bad winter thaw we experienced after record snowfall this winter. The sidewall uprights settled tipping back which brought up the pressure plates, and under pool cross supports!! There are now some big pockets on the bottom of the pool that are really stretching the liner. Any suggestions? I am hoping to just ride it out through the summer and then pull the liner and hopefully I can re-level and maybe add some more sand to fill in the voids. I used the 8 x 16 x 4 solid blocks at all uprights too.