I rebuilt my flippers on my EBD using the suggestion to downgrade. Everything works great, however I have one issue. Sometimes when the ball rolls down the playfield hard enough and hits the flipper in the hold position, it doesn't hold firm. Instead the flipper gives a bit, the EOS closes, flipper pulses and rockets the ball back up the playfield.

This doesn't happen all the time. Just sometimes. I have new coils installed so I know its not the coil. My FG (with the old mechs) hold without any problems.

Do i need a different coil stop than what came in the kit or is there something else I should try?

Thanks. I'll give it a shot when I get a chance.

I fiddled with the coil stop and still had the same problem. I installed the original coil stops and the flippers hold like they should. The coil stops that came with the kit have that indented ring around the center. (http://pbresource.com/rebuildk/kt-bflip-03.jpg)

The existing coil stops are solid. (http://pbresource.com/rebuildk/kt-bflip-04.jpg)

Do I need to buy the other type of coil stops?

The originals weren't in horrible shape but I'd rather use new parts since the rest of the assembly uses new parts.