The flipper coil on my Williams Hot tip doesn't return to it's normal position. It goes back about 85% of the way. I think it's because someone shot some WD-40 or lithium greese, or something into the coil.

Do I need a new coil cleeve, or can I clean out the gunk somehow? Is it a problem that involves more than a coil sleeve?

I could be wrong about the wd40, so if you have any suggestions regarding a sticking flipper coil, I am open to hearing them.

And if anyone can tell me the best way to test the return spring, that would be great.

So I took apart the flipper and cleaned out the coil sleeve. It wasn't that bad. Then I checked all the links and made sure the flipper wasn't dragging.

I played a couple of games and it seemed fine.

A couple of days later it quit retracting all the way again. It seems like the spring isn't snapping the flipper back into place. Should I try pulling on the ends of the spring to make it a little more "tense." I don't mind buying a new spring or other parts, but like Evan said, there is nothing more annoying than to buy a part, pay for shipping and then buy more parts next week and pay for shipping again.

Thanks for the tip. I didn't see any mushrooming or rough edges, but I will check again. That was the first time I ever took apart a flipper and was really focused on what I did and getting it back together right.

EXCELLENT IDEA!