Very nice Bob. Good luck on getting more bubinga.
When I was progressing into making M&T joints and began doing the mortises with a router, I realized that most of the joint strength came from the quality of fit of the flat sides of the mortise and tenon, so I started making the mortises with a router bit and leaving the ends round, then making the tenons with flat ends that fit into it. The 1/2 round ends of the mortise became space for the excess glue and the joint was just as strong.
I now use a Leigh FMT jig for making my mortise and tenon joints, so both my mortises and tenons are round ended and I make them with the same setup of the jig, one of the benefits of using the FMT jig. This is the only M&T jig that I found on the market that lets you make both, and has an adjustment tor the tightness of fit. Once I get it the way that I like, I can cut them all day and they are all interchangeable, if all were made the same size. I usually shoot for a slight rub dry fit so there is a little room left for glue.
Central North Carolina