Hi Isaac, thank you very much for the detailed photo's.

With the voltmeter set to the 750Vac range I'm not sure if anything can be read into the "017" displayed but if there were 17volts of AC present on that line the sensor might be having trouble making sense of it. The main clue here is that there's more volts at the RX than what the sensor says is being put into the digiswitch and there's no way that can be. I know the YS cdi puts a lot of noise back on it's battery.

What I'd be tempted to do is remove all the servo's from the receiver and make up a dummy load like a simple resistor (4 or 5 ohms, or a 6V 5Watt light bulb) that will draw about 1 amp and plug that into the receiver and see what that does. Or before that, replace the digiswitch with another regulator (just for bench testing). There's something funny going on...