Hi there can any one help me I bought a nsr 250 r5k a few years ago and it ran but only fired on the left cylinder right exhaust so I decided 2 strip the carbs and the bike down and ive recently got it back together but ive still got the problem it will fire up on the left cylinder fine and when the right cylinder fires it just revs right up what it is. The left cylinder seems to have the usual smoke and oil residue but the right one has smoke when it fires but no residue any idea what is wrong hopfully someone can help ive no idea