I recently swapped a perfectly tuned mikuni vm30 for an amal 930 - for no other reason than it seems more “correct” to me.
Had I never experienced how well the bike can run (thanks to the mikuni), I’d be even more shocked by the improvement of these new variations of the old MKI over their vintage "original" siblings. Sadly, they still seem to be made of melted down paperclips... so, so soft.
After a bit of tinkering, the bike starts easily, idles reasonably well and rolls through the throttle range without issues. But it does none of these things as well as it did with the mikuni. Still, I plan on keeping the Amal. It’s just looks right, and to me, my enfield is a toy, not a serious or relied upon mode of transport. And its surely never called upon to anything other than putt about on back roads.
Like everything else in life, contentment it’s a matter of what you’re looking to achieve.