Quoted from JeffZee:I started shopping my playfield today and here's what I found in the upper right corner... a black rubber and two studs screwed into the side rail. Looks like someone's attempt at preventing the ball from jumping over the arch rail and getting stuck in the corner. But it seems to me that the Party Punch ramp is too low to allow such a jump. I'm thinking this is just someone's useless hack. I'm wondering what others have found in this area of the playfield. Am I missing a factory part?
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No there is nothing there. Both of those Bolt/Nut combos that you have in your side rails should be gone along with that rubber. I have never had an issue with the ball jumping the side rail in that corner.