Hey guys - been dealing with random issues and while I thought I had them solved, I must be missing something...

The top upper right flipper sometimes stops flipping after several games. I know for sure it isn't the lower's EOS switch because it's all brand new and I've watched it work exactly the same when the top flipper flips and when it doesn't. Last time this occurred, I re-flowed the solder connections at the top upper right and it worked for a week or so but now same thing happens. It's always after a period of time, never right away. I don't know System 1 games too well - are there other things to check for this issue?

Also, and this occurs randomly regardless of how long the game is on, the game will slam tilt out of the blue. No shaking the game, no bumps, it just does it. I've checked the two (I think there are just two?) slam tilt switches and they have huge gaps. Are there any other things to check? If not, do you think disconnecting the slam tilts would fix the issue?

Thanks for any help.

I bought a rebuild kit from Pinball Resource. Came with everything but the coil and bracket. All new switches.

I have the ni-wumpf board. How would I jumper it? Pardon my ignorance.