I have a Sterling sliding shower door (one that sits on a tub). The
doors have rollers that slide open along a track in the frame. The
problem is, my tub is not perfectly level, and the doors roll so
easily that they won't stay open. The doors always want to "fall"
towards the bottom of the slope, which is the faucet end of the tub.
Does anyone have any ideas on how to keep the doors closed?