i posted the other day with the subject of "HELP PLEASE" well iv had a mess with it today put a different inlet manifold on not as that would make much difference but i changed it, and i also had a play around with the mixture scre wich has got it riding abit longa but if i try and open it up to fast it just dies again ... so im thinking new plug new coil and new plug cap??? i replaced the coil b4 wich a pit bike coil as thats alls i had at the time but it did the job... anybody got an idea of what the problem could be :/??