Synchronized my carbs. Went very well. Set my gauges up, 2 & 4 were spot on identical, 1 & 3 were off (high) with 3 being the worst. So I scooched them down bit by bit and got all four nice and level. . Waited a minute or two and fired up again to double check before buttoning it all up again. Sounds sweeter ticking over and lovely and free revving. Took about 2 hours but I wasn’t in a rush and enjoyed doing it.