What to do with a bike that rides like it's lean - surging, stumbling at constant throttle, weak power (not horrible, but not good either), gets worse as it warms up - yet it doesn't appear to be excessively lean if you look at the plugs.
Also - it idles, starts, and accelerates just fine.
Could this be an instance where I might need to raise my needles up a bit.
83 Sabre.