Over fueling...Choke or float heights?
yeah just checked those this week
yeah air filters checked & cleaned
it accelerates smooth up to 6k then stops dead wont creep past that point,
also when riding and pull clutch in it will rev to 8-9k but as soon as clutch dropped back in revs drop straight back to 6k
he's now looking down the exhaust to see if any internal corrosion blocking pipes
no not a restricted bike, was returning to Portsmouth from Nottingham when fault developed. had ridden up there great. next day riding back joined M40 @ J15 Warwick off A46, went to overtake a camper and splut chough no power!! (well restricted!) had to limp home @ 60mph plus went through a tankfull by Services @ Oxford where I'd gone up from Portsmouth to Nottm on a tank then refilled at start of journey back!