Here we are in the Beginner's Forum because quite honestly there is not a YouTube channel or Google search that will give you enough answers to figure out how to do what it is that you want to do. We are all on our own in figuring out just what comes next. It is fun to glean ideas from those that do share! I watch YouTube a lot & consider it to be my latest foray of learning. As a wantabe machinist, YouTube is my college. Today's topic, the beginning of this class, is what to do with incorrect or otherwise no longer work properly parts on an old Brown & Sharpe Dividing Head. Seen it on so many YouTube channels rights???? In this class, we will begin with a random eBay purchase. 1st pic. As advertised. 2nd pic. on the table awaiting reassembly from as shipped. Now looking at the area around where the dividing wheel mounts.............What is up with the shaft? That little plunger that gets locked out of the way & is never covered on YouTube............This 1 needs to be finished out. The set point in the set screw doesn't even fit the slot. So, this is where we will start. Questions?