I haven't even used my excal yet and I already know I won't be comfortable with the short unbalanced factory s-shaft. I've decided to make a straight shaft w/ the control box mounted under the cuff. I've ordered the tubing and quick release buttons (for battery and control box). I'm still trying to decide how I want to do the arm cuff and pistol grip. I'm pretty sure I've seen replacement grips (not just the foam) for the Sovereigns somewhere, but can't remember where. My biggest problem so far is finding a locking ring for the lower stem union. I have no idea what the technical name is for them. I tried McMaster Carr, but could find nothing. Does anyone have any ideas? I think in the end this will cost just a little less than a brand new Anderson shaft. Thanks for any comments and ideas.