Boyer problem?

My Boyer on the Commando never let me down, but it did not agree with my 850. The engine was very jumpy just above idle, and stable idle was not a feature, up and down was. After I convinced myself it must be the Boyer advance curve, I splashed out on Pazon's Altair, I love the 2013 motor car style idle, smooth and stable. It is good fun to show this off to modern riders! A good manometer type carb balancer of eBay with a healthy engine, and it is GOLD.
Cheers Richard