I just got some 22mm Tubes for the lugs on my Hamiltons. You put the Spring-Bars through the Tubes and then put the strap on. Now the problem is, that since the Tubes are 22mm I was able to put the strap on with the Spring-Bars through the tubes, but there is now no room to remove the strap, as I can't get a Spring-Bar tool into the lugs where the Tubes are.
"Gentlemen, you can't fight in here! This is the War Room." President Merkin Muffley