When I start this Agility 50 it idles okay but the idle rpm's never increase , which I would expect to happen when the bystarter needle opens it's circuit. And after idling for 5-10 minutes nothing changes. I cannot get the bystarter out (one of the retainer screw is stuck). With the bike running I checked voltage to the bystarter and it jumps around from 7.5v to 8.5v. I expected the voltage to be around 12v. 1- What should the voltage be? 2- If it should be about 12v, could the resistor be the culprit? 3- Could I just tap into a switched DC source for power to the bystarter?