What's a good carb sync tool for bikes with two cylinders? (parallel twin in my case). Right now I'm using the two bottle contraption with the hose that connects the two bottles so nothing can get sucked into the carb. I hate using it; I can't ever tell if the fluid is really flowing one way or the other until the carbs are WAY off. I just can't get good adjustments with it. I had to do my second sync with this tool last night and I do beleive I made it worse... :eek1 But I had to ride in this morning since my wife couldn't carpool with me and my bike can park at work -- car can't. The bike is running good except for an off-idle stumble/hesitation that was there the last time the carbs were out of sync. Anyway, I'm giving up on all the homemade tubes and fluid crap. I want something digital or with gauges. I've heard electronic sync tools (twinmax?) are quite good but wanted to see if anyone has used one. Suggestions?