Car appreciation... the aesthetics, the engineering, etc

It's easy to tweak the idle speed on SU carbs just follow the throttle cable to the carb and tighten the screw above the cable which would probably stop it stalling (my mini idled lower with the clutch in compared to out of gear so not unusual for it to stall if the idle speed was already low).

common on a b series, too. aging thrust washers, apparently.
crank the idle up a bit and drive it!