Stan, I just sent youy another PM and went back to your E-bay site and saw something else. 
 In Mr. Wendell's book it states the 25 came with a hitch on both ends. Yours has a hitch in the FRONT as well as the rear. My guess is it would be easier to push a plane into a hanger using the front hitch so you could see where you were going, not having to look over your shoulder to back up using the rear hitch. 
  I'm still puzzled by the belt pulley..... one just never knows.
                                                            Jim Thurnau