Single vacuum gauge to sync 912 carbs?

[avidflyer]

Hi all, I got the used 912 running on the Kitfox 4 rebuild I'm doing, and didn't have a carb mate. Got to thinking, and remembered I had this Penski vacuum gauge, plus some 1/4" shut off valves. I hooked separate hoses to each intake manifold, put a cheap snowmobile fuel valve in each line, teed them together with the other leg of the T going to the vacuum gauge. I would open one valve, with the other one shut, get a vacuum reading, and then do the same from the other side and get a reading. Fairly soon, I was within 1/2 a pound of vacuum or less on each carb at the same time. My question is, would I have been able to do a better job with a carbmate or for that mater and electronic carb balancer? I do know it's running pretty smooth. JImChuk