I don't know if the 3 sliding glass doors used on the tub in my Charleston are used on any other Heartland model so I am asking here. The screws and wheels attached to the top of the glass doors are falling off. I tried to lift and work the inside or outside panel over the lip (bottom) but have had no luck. The only way I see to get this apart ( cannot replace screws as they are up inside the top track) is to cut the silicon on the top rail at both ends and remove the screws holding top track to side rails. Anyone have an easier way??