Took awhile, and longer than usual as my gunsmith buddy had troubles with my Rolling Block extractor modifying it from a .43 Spanish to the .35-40 rim. But he called this morning to tell me both the Roller and the Sharps were ready to pick up.
The Sharps got the Sharps Sporting long-range sight, and the Roller a spare Lee Shaver Soule I had. The Sharps front dovetail was an issue, as I hadn't looked closely enough. It was a .452" dovetail, typical for Sharps, not a .375" that I had a spare globe for. I dug through my case of front and rear sights, and found a very early Lyman #17 from when they had a flip up reversible aperture. One is a peep, and the other a pin head post. So you push one down and the other pops up. It's the correct dovetail, so I put it on the Sharps. The staff has gear "teeth" up each inside riser, and the threaded barrel in the center lowers or raises the aperture. Pretty neat setup.
https://i.imgur.com/nhHT0sgl.jpg?1