Eventually both of mine broke on my Yami 80's, probably cracked from summer heating/cooling. Instead of replacing the plastic part to watch it break again I used a radiator clamp, drilled about a 1/8" hole in the ribs, put a brass, panhead bolt up through from the inside, clamped it in place and adjusted. They have worked great for 2 yrs now, haven't touched them since. Sorry, no pictures (built them at night before a trip), but I might be able to get a picture of it installed if interested.