
Yesterday i took it for its MOT passed no problems anyway i just took it easy after having a full engine rebuild but on the way home i thought id open it up alittle but it has no midrange just flat but when its gets into the higher revs it takes off pulling great through all the gears if i keep the rev high but if i let the revs go down it has no pull seems to be bogging down

When i bought the bike it had nikkon gp style pipes fitted, drilled air box and M Max box fitted. I have kept the same modifacations but changes the pipes to Dog Fighters.
Tonight after reading the jetting infomation on the site i decided to take the carbs to bits only to discover the plastic juntion part (photo) to have broken whould this cause a problem?? anyway i carried on and removed the carbs to see what size jets are fitted but the seem to be standard 128# i would have thought having these modifactions it would have had larger main jets fitted but if that was the case my theory of too much fuel and getting bgged down would be right out of the window!
Any help in the right direction would be greatly apperciated

Thanks Simon