Quoted from Rat:
Thanks for this advice, I swapped them over today and played for about an hour without it sticking. I still feel I need a couple more hours play to prove it but it's looking good so far.
I can't really see how swapping them could have fixed it. I had already checked the opto and cleaned it reseated the connection and checked that it wasn't getting stuck on anything. If there is a fault with it why does it work on the left side?
Anyway fingers crossed that I'm not back next week posting that it's sticking again.
I'm having the exact same issue... I replaced the flippers, crank and plunger, coil sleeve and coil stop, and thought it was fixed. But now it feels like there is glue under the flipper button, and it's just not as smoother as the other one. It makes it hard to play, because that sticking causes a slight delay in making connections.
Before I start trouble shooting, I have a question about the the crank and flipper shaft. I know that you are supposed to put the spacing tool between the flipper and the bushing, but what space should you have between the bushing and the crank?
When you put the flipper shaft through the crank, and put it in place, it moves as you tighten the pawl.
So should it be flush with the bushing, or should there be space?