Maybe you just caught TH on a bad day. He has always been very cordial in responding to my postings. In any case, I probably wouldn’t use the beads if I went the ruler route. I would still use the wingnut. It does exactly what you stated - provides fine tensioning. The convex grooved that I sanded into the hanger are proving to work very well. I had two very comfortable 20 min hangs today. I would recommend using the conduit for the AFB2 hanger. As I mentioned before, you should make one of the sides about 1/8 in. longer to accomodate the wingnut. Also, make the hole on the other side where the screw goes through a little large to allow the screw some side to side movement - this makes it easier to move the screw into the groove on the other side.
Jelktoid :trash: More meat for the money!