I bought one of the last models new in june 1977, and kept her for 9 years. Fantastic bike, the only drawback beeing the Isolastic system which took a lot of play along the years, therefore damaging roadholding. I still regret her !.
That Commando sounds terrible with that single Mikuni and it no longer idles properly. It used to be a nice Commando, until some owner who couldn't adjust dual carbs, installed that single Mikuni thinking that would solve their technical limitations. Why compromise the performance of a Norton Commando by removing the dual carbs? Now they have a bike that has lost the acceleration, the torque and the grunt that Norton Commandos were engineered and designed to have.
A performance loser with the single Mikuni and it just looks wrong. Somebody couldn't adjust dual Amals. Shame, hope the new owner can return it to a proper Commando.
