sevenhelmet
·What is the uncompressed length of the Omega bars you removed?
The plot thickens. In preparing to respond, I broke out my vernier caliper. Turns out that I have several bars which measure roughly 23.3mm uncompressed, and one that measures just 22.4mm. It's visually apparent, but not enough so to be obvious when they're all together in a parts bag. I tried the 22.4mm bar, and it popped right in! Looks like putting all my "20mm" spring bars in the same parts bag finally bit me, as they aren't all created equal. What's really odd is that I dropped one, found a spring bar on the floor, yet I only have 1 that is the proper length. So it looks like the spring bar I found had been down there a while, and the one I dropped this morning is still on the floor somewhere.
Time to go parts shopping. And stop dropping spring bars during strap swaps. I feel more than a bit sheepish. 😵💫
Al, you continue to amaze me with your insight and education. Thank you for introducing me to something new. Before today, I would have thought a 20mm bar was a 20mm bar was a 20mm bar. Not so. 👍

