I recently bought an 07 zzr600 i test rode it. Felt fine. Sounded fine. Paid for it and drove it an hour home 99% freeway. From sarasoto fl to st petersburg fl. Again felt fine, sounded fine. Power was there. Got home shut it off. Next day after work i i started it and it idled rough and wouldnt stay started. Eventually when it was up to temp i took around a few block. Idle never got better and stalled at every stop. Then if i tried to throttle up to blow it out it hesitates up to about 4k then opens up rapidly. Was advertised as a daily rider freshly rebuilt carbs petcock and fuel lines. Please help!