Hi, I originally modified some American Flyer switches for my yard but got stuck thinking about wiring switch machines etc... then I found a few used S Helper switches and went to work. Cut the first one too short in the trial and error effort but the second round came out a little better. I have reinforced all the new joints with screwed/glued plates underneath. They fit now, just have to double-check the wiring.
If anyone would like the modified AF switches, they can be had for the cost of shipping from 14818.