I have a bar10 but I had the same problem with the bolt locking up from the screw being in too tight. what I did was I took some paper and put it inside the piece the screw goes into that hold the handle in place. The paper goes in the space around the screw so when I put it all together the paper acts like a shim and keeps the end from going too far and locking the handle. I don't have the terminology for it so I hope that made sense.