I used the ColorTune from Morgan Carbtune on the weekend for the first time.
It's a doddle.
I doubt if it took 5 mins per cylinder. Mixture on both cylinders was way too rich; fixed with the turn of a screw. Went from idling at over 2000 rpm and overheating to about 1500 rpm. Next weekend, sync the carby's but the improvement was phenominal.