I didn't find any pictures that would be usefull to you, just a front quarter shot of the airplane. The mx manual should be helpful, but I don't remember how many useful drawings that it would have. I used to fly the Cutlass RG, and have often thought about modeling it. The main gear retract has always been the hangup. I don't have access to any tools to build the mains. My other option is to make a smaller model and just leave the gear off, but that is no fun.
I have included an embarrasingly rough scetch of what I remember of the system. The mains are actuated by a hydraulic cylinder with a rack and pinion. THe pinion is on the gear trunion, and I think that it is on the inboard side, not outboard as I have drawn. It may take a little experimenting to get the angles right, as there are a few that have to work together. I hope that the drawing helps.
Ben