Quoted from Jimmyd044:
You have a sample jackbot. I tried for years to fix the eye lock issue. I ended up selling it to a friend with full disclosure that it was a sample and explain the ball lock problem. I recently bought another jackbot but this time it was a production model with the upgraded ball locks.
Exactly. The two dead giveaways on these samples are the colored visor KENO arrows (on production they are white), and the sky blue plastic over the left ramp (on production they are black and purple).
I hate these sample games with a passion. They appear to have made a ton of them for a game with such a low production run, they pop up all the time. I just got an email today from someone who wants to sell one (they included pics).
The weird thing on these are the cabinets ALWAYS look perfect on samples - they don't seem to fade in the reds and yellows like production ones do. I think they are direct printed rather than decals or something.
People (including me) have tried everything. Dead foam, rubber, dropping the mechs a little with washers...really nothing works. The WPC flippers are simply too strong.
Do what I did - change the settings to three easy multiballs instead of two to compensate for all the rejects. I suppose you could put the weakest possible flipper coils in there and make the game as steep as possible, but that will create other problems (good luck making the ramp). Really ruined the game for me, and I LOVE Jackbot.
let us know if anything works. As far as I know the only way to really fix it would be to acquire and install the proper eye lock mechs, which would require routing/drilling the playfield a bit so they would fit.