The paper is likely to wear out and you'll be back to the drawing board. What I've seen make these style flipper stick is worn sleeves (the split ones that go around the plungers and rest in the "L bracket"), that same "L bracket" being not quite at a 90 degree bend where it mounts to the plate, this is critical (actually so are good sleeves). Gap not correct between the flipper bat and playfield bushing, too low or too high, puts the plunger in a bind. If you got a rebuild kit use everything. This old bally flippers are tricky and getting everything adjusted right is crucial for them to act right.