I just finished re-assembling my ACD, after I removed the lower board. The score motor was removed, dis-assembled, and hand polished as well as all of the relays. All of the contacts were cleaned with a quick swipe of the dremel with a wire wheel. All Jones plugs were cleaned the same way.
Play field was cleaned and waxed, with new rubbers, and all stainless was hand polished. I like the Mothers Wheel Cleaner paste with 0000 steel wool for that.
So fast forward to today. I have this machine next to my Team One and I am trying to see which one I prefer. I have ACD set on hi-tap which improves the action greatly.
One problem just arose though. After 2 days of playing, occasionally a 500 point target or rollover will not score, and the ball remains in the drain hole.
Thoughts?