So a day in the garage, working on the mk3 commando. First thing that didn't fit was the washer's for the through bolts for the barrels. 45 minutes to get them ground down. Then the chain tensioner plungers were 0.2 mm too big so a call to norton tomorrow. Then finally the replacement camshaft had badly formed threads so needed another 45 minutes of work to allow the sprocket and nut to fit. Complete shite really because the parts are no longer cheap. Oh well on the bright side I may have wasted most of the day trying to fit crap parts but at least I managed a run out on my roadster pictured above. Satisfying despite the hassle.