Fred,
On a Travel Supreme I would first spray silicon or a light oil on the exterior slide rollers. You can see them with the slides extended by looking up where the structural slide supports go into the coach body. Also check to ensure the rollers under the slide on the inside are free. You can feel them under the slide from the inside when the slide is retracted. Another item to check would be to ensure the slide motor mounting bolts are all secure. If it still needs a push there is an adjustment you can make to the motor controller.
Each slide on a Travel Supreme uses a motor controller which provides power and polarity (inward/outward travel) to the DC slide motor. The controllers are usually located in the basement compartment forward of the driver's side front tire. They are marked kinda funky, DS means Door Side (NOT Driver's Side) and ODS means Opposing Door Side, so be sure you adjust the correct one. The controllers monitor motor current so when the slide reaches it's end of travel (either fully extended or retracted) and the motor is mechanically stopped (locked rotor condition), the controller senses the increase in current and de-energizes the motor before any damage occurs or the fuses blow.
You can adjust the trip value using the potentiometer on the controller. There are two adjustment (extension and retraction) so pay attention to what you are tweaking. Also, it usually doesn't take much, so make small adjustments (a couple of degrees at a time) and then try the slide. If you need to adjust it so much that you are blowing the fuse, either the controller has a problem or the slide is binding. All the controllers are the same so you can always swap one out to isolate the cause, but I think lube or adjustment will be all you need to do.
Good luck and feel free to PM me if you have any questions.
Lou
05 Travel Supreme Envoy