I've got a vinyl liner (6yrs old) with a leak on the bottom step gasket. It was diagnosed by a guy and NOW the screws are out and the gasket is pulled. Subsequently, the liner has moved and the screw holes don't line up anymore. Now, no more guy. I've had another guy take a look and he says new liner or you have to seal where the step screw holes line up. But that would be short term fix and he's not sure it would work. Only real fix is a new liner. Anybody ever have this happen? HELP....