I can't seem to find an answer to this one... How much should the frame on my Intex move? I have two older girls who "dive" and jump around in the pool the entire time they're in there and the frame is in constant motion; creaking and swaying. We've only had it up for a few weeks, maybe a month, and it's on a concrete pad, so it's as level as it can be. I didn't expect it to move this much, so I just wanted to check that it's "normal" and not unsafe. The legs were level from front to back when I first set it up, but aren't anymore (I think they moved out when it was filled with water). Thanks!