you are going to need lots of hot water ( I use boiling water ) dont use a hair dryer it doesnt cover enough of an area & go buy some liner lock. You will need T-Bead liner lock.Depending on the pliability of the liner you may need to lower your water level some more. You will pour the hot water below where the liner is pulled down then pull it up n try to slide it back into the track, while holding it into the track press in the liner lock. If your liner is tough to pull up go for small gains. Do not use a screwdriver to try & push the liner back into the track. This process will require patience, if you dont have the patience call your local service company.