Miata Bikini Top Center Brace Handle Adapter with retention

Remixed version of the awesome front center brace adapter by Miatafied. I added a slot to keep the end in the tube.I used M5 tee nuts that I had on hand. M5 bolt for the thumb screw.I also made an insert for the rear of the brace where it touches the rollbar: https://www.printables.com/model/494295-miata-bikini-top-center-brace-roll-bar-adapter