Yea, when I take a break in the shop I always say "We'll be back after these commercials..."Unfortunately I've been out in the shop and as predicted above, the Good And Friendly Shop Elves didn't come and clean the place up while I was gone; still a mess and the bike still isn't finished.
Might try a washer on both sides, or maybe a bigger washer on both sides of the grommet. You might also try the conical part of a Swagelok ferrule of appropriate size on both sides to wedge out on the grommet from the hole in the middle of it.While I'm sitting here coughing and sniffling and wishing I weren't... One of the problems I was having before I left town for the winter was that I wasn't satisfied with the mounting of the bar-end mirrors. They've got a rubber grommet w/ a hole through the middle and there's a nut and washer that squeezes the grommet to tighten the whole assembly into place. Can't seem to get the thing tight enough to really mount the mirrors up nice and solid. Any suggestions?
I find with those you need to have them so tight they barely go in the bars and then they will tighten enough to stay put. Almost need to hammer them in. Annoying but they can work
Do you have room to make a shim/sleeve from a strip of beer can? Sometimes, one wrap of electrical tape works, but it's thick. The beer can usually works better.
If the shop has air conditioning, it is better to compress inside (pre-dried) air.