Here’s a little mystery I’m trying to figure out. My AGP is I think 5 years old. After opening this year I noticed these ripples in the floor of the liner. They all run roughly the same direction. They weren’t there when closing last fall. I’m in Oklahoma and we’ve had some earthquakes in the past year. Strong enough that I had lots of Sheetrock joint tape peel off my walls. Strong enough that it woke me up one morning. Could that cause this wrinkling? 
