I did not know that about the joint diameter. That's why I'm asking and learning. I'm not sure about the length in pretty tall and do prefer longer shafts. I guess it would be prettiest tapered, but I'm not sure something that small would be noticed.How short is short? Remember that McDermott is .850" while Uni-Loc cues are .840" Should the adapter be just one diameter or tapered? The Uni-Loc pin sits pretty deep down in the cue, they do make a brass Uni-Loc pin that's much shorter, but it does add a lttle weight.