RE: C/L scale handle
Eric,
As I mentioned in posts earlier in this thread, I use a JR transmitter in the direct servo control mode and am not familiar with the Young handle. I have noticed, painfully, that any short circuit in the control lines will cause my system to fail. Had a problem using eyelets at the end of my lines that had sharp edges. Under the load of flying the sharp edges would penetrate the insulation on my flying lines and short out the system. Pretty ugly crash. I haven't done electrics yet, but in my reading, or discussions at the R/C field, I have heard that some ESC's are sensitive to the end points of the throttle channel. Maybe you can't get the right range on the Young throttle channel to enable the ESC.
How about posting a photo of the Shack.
Chuck