Hi ppl I have a problem, recently boufht a 1989 gsxr 750 Sling shot that was running rough at low revs so I took carbs off and seeen that the air/fuel mixture screws were goosed so I put 100 katana carbs on and used all the interals of my 750 carbs, bike stqarted firt kick then started spluttering and dies after a few minuts renewed spark plugs cleaned out carbs renewed fuel tap and checked for drawing air bike starts up fine and runs good for a few minutes then splutteres does not take revs and dies and to start it again I have to crank her over for 2-3 minutes on full throttle and then hold the throttle on full for a while uwith it just ticking over on full throttle and after a while it revs to the limiter?.