I've recently acquired a '99 wave that needed a little TLC, and discovered that the main block bracket on the rear crossbar is very loose due to the screws having backed out from the hex-head nuts inside the bar. I've tried applying upward force from beneath the screw head to get the hex nuts to bite, but they seem to be "seized up" to the shaft of the screw .. There's about an 1/8" of vertical play between the top of the screw head and the crossbar. I'm just not confident in the integrity of this bracket like this if it were under a nice load from the main. So, if you could imagine a nice tight main bracket on the rear crossbar, and back the screws out an 1/8", that's what I'm dealing with. Any advice will do ! heheh
They are usually riveted on.
Just cut the screws and reattach it with SS rivets.