Maybe remove the flipper coil stop and sleeve.
Its possible that its just dirty and jamming due to black dust accumulation.
See if the coil stop is "cupped", file down as needed.
A cupped coil stop will match the plunger end too closely and lock together.
File off any mushrooming on the plunger.
All of this maintenance can be done with just an allen wrench and a file.
If that solves the problem then go ahead and check and clean the other flippers as well.
It seems that the current coil stops may be a little softer than in the past. Possibly to get a longer plunger life. JMHO...
Carlyle, IL
