Quoted from EMsInKC:It usually is the sleeve. That's why I said see if you can get a new coil because I know those old metal Bally sleeves won't come out without destroying the coil.
Cleaning it up might work. It's worth a try. I'll see if I have any old Bally coils lying around that might work.
I just pulled 4 metal coil sleeves out of a Bally Twin Win last week.
They came out fine and destroyed nothing.
Are they different then the ones you guys are talking about?