We just had our liner replaced and I notice the vacuum tips. I only saw it once, but it got my attention. I finally went into the pool and noticed the bottom wasn't as flat as I'd prefer. Turns out, when I went to the exact spot where the vacuum tipped, I notice a pull in the liner. It's just about 1 foot long, just off center of the pool. Nothing short of emptying the pool can be done, correct?