what do you mean by "operating sporadically"?
Some of this is speculation...
Fact: Kwikee (not quickee) uses a common window riser motor, Ford or Chevy depending on the model of the steps. (And possibly Chrysler as well) but you can get a new motor at an Auto Parts Store or so I"m told
Speculation: THey use 2nds not the best of the product.
I found the motor on my unit has a "Dead Spot" or two. if the motor stops on the dead spot.. NO operation.. I take a hammer, "Thunk" the motor a few times using the HANDLE of the hammer (hold the head, I don't want to smash the thing) and then get out from under and open the door.. steps extend (or close the door and they retract).
Finally I open the transmission (Careful, small parts will get lost) and move the gears so the motor stops at a different stop.
SAnd it Works.
Later I had to replace the steps (Due to operator error) and again I had to re-index the motor.