In most peoples' experience, if the bolt wasn't employed and you stuck with the pin, if nipped up in the (padded, of course) vice and, perhaps shimmed, how long until the sloppiness crept back in? Guessing it may come back quicker in the Meteor with the hollow jaws as compared to the Supersport / Mercury? The Supersport jaws do seem somewhat more beefy. Are they slightly less prone?

The only one I had to do many years ago was my ageing, heavily used slabby, blonde Mercury. My current Supersport, which does not appear to have enjoyed an easy like, exhibits no slop at present.