Oh, and another factor is the back face of the prop. Sensenichs have a 2.25" hole all the way through the prop, and some prop hubs have a 2.25" centering boss on the front of the prop hub. If Dan's hub is that way, any prop that's going to work will need to be clearanced 2.25" on the back to fit. Just a thought, and Dan would need to chime in on this. My Sterba has the countersink, as I made my hub with the centering boss.
Mark Langford ML at N56ML.com website at http://www.N56ML.com --------------------------------------------------------