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Hi, I recently purchased my first Guzzi: a 2004 Ballabio with ~15k kms and in excellent condition. That is, with the exception of a significant surging and bucking problem. It is most evident when the engine is hot, at lower speeds/rpms and throttling down. The previous owner did not have it very long but did change the plugs and had a local MG service tech service the bike. The tech adjusted the throttle position sensor, CO% and left side throttle body back to factory specs. He recommended the injectors be cleaned as "one or both are not spraying fuel properly because he had to trim fuel to negative side of adjustment". Truthfully, I very limited mechanical skill and knowledge and therefore, am unclear whether we are on the right track or not. I have longed for a Guzzi since I started riding many years ago and was delighted when I found this particular one. Needless to say, it's been very disappointing but I am still very hopeful this is remediable with your help. Many thanks, in advance, for any thoughts.