Had a broken tooth on a Bally Bonus Unit ratchet. Did a repair using JB Weld and it working fine. I've included pictures. First pic shows the missing tooth. I cleaned the area using alcohol then built a dam using pieces of popsicle sticks and tape. I made sure the epoxy could extend along both sides of the wheel (ratchet) and join through one of the holes in the wheel for added strength. After the dam was complete I mixed the JB Weld and poured it into the dam and left to harden. After it had set up, I removed the dam and restored the missing tooth using a dremel tool. I left excess material on both sides for strength. Installed and didn't use for 24 hours. Have been playing the game and the bonus is now working correctly again.