Cleaned the contacts, adjusted again, got it working fine! Then..........discovered pop bumpers not working, and an aweful buzzing coming from the score reel relays. The 100 point score reel relay is buzzing after a pop bumper is hit, you get no points, and the bumper doesnt activate. I think there is a short somewhere, hit me for six to have it fixed then this happen........it tripped the safety switch in the meter box as well. Interesting that the score reels function fine, all of them do, but activating either pop-bumper stuffs things up. Time for an expert tech to visit. I have spent 2 days, and with even with good advice have managed to make a new problem lol 
Later the wife called me in to say the washing machine wont spin............ 
grabbed it by front and shook the crap out of it (maybe I was venting over King Pin lol)........Instant fix! At least I get points for that achievement. 
Seems to me that the issue is still with the "Q" relay - Every time you clean / Adjust - the machine initially works - then fails - HAS to be an adjustment.
Your idea of having someone have a quick look over it is a good idea - do you have schematics ?
