The foot pegs buzz abit but the handle bars are OK. My friend's Firebird buzzes a lot more. I bet its the carb sync. AMAL's don't have manometer sync taps. And I thought tuning Bings was an art!!!!
The dual carb models have a cross over tube (1/4" fuel line) between the two intake manifolds, which is where you attach the manometer. Lately I'm getting so lazy I just do it by ear, though. Amals are much simpler than Bing CV carbs, but they don't seem to hold the tune for as long. I don't know why. Maybe because the points wear out a bit and people try to tune the carbs to compensate... I hope I'm past that sort of stuff!
Why do you think the Britbikes use dual points whereas BMW apparently did just fine with one set of points and a wasted spark? I'm guessing it's a hot rod thing, giving each coil more dwell time and a hotter spark, but I wonder how much difference it really makes. My mom has a '65 Imperial with a 413, and I was reading her shop manual prior to tuning the car up and noticed that they had a dual point option for the muscle cars; thankfully hers just has one set of points.