Quoted from gmkalos:
Ok lets see..
1. Not sure about the grand champion I'd leave it alone I think you will most likelly erase all 4 scores
2. If your talking about the ball troff under the apron there's a trap wire that keeps the ball from bouncing back into the hole you may be missing that.
3. got you covered go threw the previous pages in this thread and I listed the Marco replacement part for that saucer hole, I wouldn't use the rubber it may make it be more bouncy its already a tough shot.
Regarding number 2...I recently removed my apron for the 1st time with a full shop and I don't see any type of "trap wire". Pics anyone?