Mtheelis

Hello all I wondering if I could get some advice. I have recently bought a xvs 650 dragster 97. But when I first taken it out it was jolty, wasn't very responsive, and revs wound just go up and sit their then drop again. When I was ridding and release the throttle the idle was to low and it would cut out. I then taken it back cleaned the jets on the carbs out 2 of them was blocked and it ran sweet for an hour she was responsive no jolts or back pops rode a dream. Until on the way home she went back to running dig shit. This morning I stripped the jets cleaned them, fuel filter and air filter and put in some nice new fuel bit she is still running like a dick head. If I can have any advice or if this has happened to you and know what the issue is I would really appreciate it? Cheers martin