Great job on this. Can see how it would be hard to find the problem as it looked ok. Thanks for sharing. 👍👍. Bob

Timing and masking circuits are tough to understand , and sometimes tougher to teach. Thank you for sharing your skills.

Hi guys, another great informative video. I'm have the slippage problem with the set screws on the roto unit shaft om my Hi Dolly. I wonder why Gottlieb didn't case harden the screw location area and then grind flats so the screws could make contact on a larger area. What is your view of using a product like Loctite might that help solve the problem do you think?