Nice build and Beafy, Leversole! Enjoyed your write up on the site too. For the arm pivots did you use FH shoulder screws or let them run on the threads? The FH's seems like a good idea to help keep them centered as well as extra bearing surface, but there is a lot of pressure on those in both axis, especially if making a long run. Your knurls sure came out Real Nice! Thanks for sharing! ~PJ