Quoted from chuckwurt:When tightening flipper bats with my trusty Allen wrench, how tight do I want it? The reason I ask is because I bought a new flipper bat for my classic stern and I think I tightened it too much because it made a groove in the bat that was just so, and it caused the flipper to not swing freely eventually and the back of the linkage started to slip below the backstop of the flipper bracket. Hope that makes sense. Haha
chuck:
I had the same issue with the linkage slipping below the stop of one flipper. I ended up removing that stop and slipping a pair of washers under it.
prior to "wrenching" on the allen screws, make sure that you have set your gap between the bottom of the flipper and playfield. my neighbor and I found that when using old flipper bats (those that already had a groove in the bat), the allen screws tended to want to migrate back to those depressions which eliminated the gap and caused the linkage to somewhat bind. sliding a credit card between the bottom of the bat and the playfield will ensure that you maintain some sort of gap to eliminate the potential binding.
as far as the stops go on the flipper brackets, mine were from pinball life as well. I wonder if terry's supplier got a little cheap on the materials and subsequently the height of the stop is about 1-2mm shorter than it really should be.