Stand Pivot

 I was finally able to get the adjustment mechanism done:

 Using the pattern to rough cut the brackets out on the bandsaw.

 Using one of the brackets as a pattern for the other.

 Double stick tape keeps the brackets together while drilling the holes.

 Rough cutting the top of the post, I used a float and my block plane to refine the curve, finishing up with sandpaper.

How it works:

 Later I swapped the lower peg for a 3/8" one.

 For the pivot, I put it into the drill press and sanded it while it was rotating, creating a nice looking circular pattern on the end.  Using a file (with the drill running) I also beveled the edges.

 After epoxying the pin into the post, I pinned it with 1/8" brass pin-stock to ensure that it will never fall out, even if the epoxy weakens.

Sanded flush.