I need opinions concerning a motor problem w/this loco. Engine was built in 1964. It has never been run. In checking it out, I found that it would not operate. Eventually, I identified the following. Once the motor was freed, it would run fine, but would start 7 out of 10 times. Several(?) of the commutators(?)(part which the brushes bear against)are apparently dead. There is no response to touching some of the segments with a lead. Further, the clear flexible coupling, off the driveshaft to the rear engine spur shaft, has hardenened and developed a slight droop. The motor cannot turn the spur shafts, I believe because of this droop. The motor looks like a DC71, except the brush holders are much more elaborate than Pittman's. Does somebody do repairs? Anyone have a source for neoprene/silicone flexible tubing?