Oh shit lol... And i was gonna have it "fixed".

The motor isnt dying. The tracks are fine. I think it may have slipped a notch on the gear?

It rolls up and down perfectly fine. When it gets up to where it should seal it drops about half an inch and then goes up and drops half an inch, repeats. It also macks a realyl loud and irritating noise when it drops. CLUNK CLUNK CLUNK CLUNK, from the thing droppin.