Review on Boston Gear Change Degree Pressure by Patrick Nepal

This is the exact tooth profile for the 20" Walker Turner Table Lift (I believe some of the later Rockwell models too). The gearbox needs to be drilled and restored. I did this repair in 2014 and it has held up for almost 5 years now. Attached is a drawing I made. Requires a lathe or mill, an arbor press, and a broach for mod. The press fit should technically increase gear performance without those set screws, but I didn't take the risk. If anyone installs set screws, use a punch to make sure they never come out. It would probably cost more than a drill press if you paid someone to do it. But it's a really good drill.