hi can anyone help,ive just bought a exup 1000 92 the problem is its got a straight through akra pipe there site says it goes straight on and no upgrade to the carbs are needed the trouble is theres no power and i mean none it splutters and farts up to 3k revs!!! its flooding itself at low revs and consumes petrol at a crazy rate,ive totally overhauled the carbs and checked all jets and air screws etc are set to standard,please please someone help me,im loseing heart with her!