I'm working on the wifes bike 02 GSXR-600. It has a bad hesitation in the throttle up untill about 5k. When you first start the if you try and rev it it will just die. You have to build the throttle up in baby steps, barely give it gas and gradualy keep getting higher up in the rpms. and it makes no difference wether or not the bike is warmed up. I have pulled the tb's off and they are clean as a whistle, as are the injectors. the tb's do not need to be sycnd either. Now that said the valves are caked in build up so it needs some sea foam attn. I pulled the plugs and they were wet with gas so they need to be changed. it has 17500 on the clock sot i'm thinking the valves may need to be adjusted. also i gave the bike a fresh tune-up last year when we got the bike and we might have put 2k on the bike. Any help would be appreciated.