My 1986 Softail Custom has intermittent starting problems. When it does not start it has the single 'relay click' and that is all. I get voltage through to the small post of the solenoid, but nothing past this. I figure it may be sticking so I gently tap on the solenoid with a screwdriver butt while holding in the starter switch, and it then starts!! 1. Is it that the solenoid is sticking? 2. Is it that there is borderline juice coming through that is not enough to fire the solenoid without a nudge? 3. Is it a bad ground from the relay or somewhere? Can someone please let me know, and also how to fix it? Thanks for your help everybody!