THANK YOU all for your responses to my question. A combination of ideas made it slide like butter off a hot knife. Before repair it required two people to open or close. I removed all the wood from the slider and the fiberglass cover the slider goes into. I sanded it all and recoated it with CETOL.(3x) I then waxed the recovered wood that attached on the sides of the fiberglass cover to a very high sheen. I cleaned and waxed the acrylic cover before reinstalling it. After that I cleaned and waxed the plastic slides that the cover sits on when in the closed position. The cover then slid back with one hand but with some drag. I then replaced the rubber bumpers on the bottom of the teak boards that fit on each side of the fiberglass lid. The new bumpers are 1/8th inch taller that the worndown original bumpers. NOW!!!!! the acrylic companionway slides so fast it almost bounces back. I think that a person could clean and wax the areas that are accessable with the hatch in place and replace or shim the rubber bumpers and make a very noticeable improvement without the long process I went through. Again, Thanks. Ray