Lots of fretting about the measurements of the horizontal members that join the 4 main vertical posts that are the anchor for the rotor pylon. Do I put threaded inserts in the cross-tubes first? Well, I don't have the inserts yet, and I need these cross members in to fab the rest of the fuse, so I've decided that even if I need to ream the tubes to put the inserts in, that's OK.
