hi. i just wanted to mention that we got our liner replaced in April for our in-ground pool and had similar issues as you. The pool guy came out and removed the small wrinkles that I noticed at that time, I wasn't home when he did it but when I spoke to him I asked how that was done and he said they just use a plunger, anyways it worked but definitely would have the pool people do that. I did find a couple other small wrinkles and I was able to smooth those out with my foot just last weekend. Another problem I have, not sure if you do or not, was with the liner not laying completely flat on the floor and connecting wall leading to the steps. Our pool guy said there is more pull in front of the steps and that area will relax more as the water gets warmer. Right after installation he referred to that part of the liner as "floating", and again stated it would flatten as the water warmed up. It has flattened quite a bit but not fully, and hoping it will soon because I see this as a problem if not. Not sure if any of this helps but thought I would let you know my experience with the wrinkles and what could be done. Good Luck!