I synchronized the duals SU carbs in an Austin Healy Sprite with an original UniSyn, but didn't trust the results. Bad mistake. I took it to a Healy dealer and had them adjust them. It took about 300 miles for the two rear exhaust valves to burn up. Sodium filled valves $60 each in 1972 dollars.
Have a little faith in yourself when you use a Uni-Syn. It's really pretty easy to see what's going on.
