[jerry w]

I used 3/8 rod. My bumpers are from Finishline. I put teflon tape (bumper end) on some of the ends of the threaded rod and I put medium strength Loc-tite on the others as an experiment to see which would hold better.

After a couple hundred miles no reported problems, both seem nice, tight and secure.

Regarding the oversize holes in the frame. I found that I had to adjust the angle of my bumpers ever so slightly to make them look even. I did this by sanding the end of a tube at just a little angle. The end of the tube that touches the frame. The over-size hole I think helped let the threaded rod line up where I wanted it. The tube is much larger in diameter than rod, so this allows for adjustment, which I needed.

Hope this helps, keep us posted.

Regards,