thanks in advance for any help / opinions on this one. I have a 19 gsxr 750 with about 50k kms on it. I've had the plugs and airfilter changed and had the carbs cleaned and sync'd. I just got the bike and it's my first sport bike. I've had dozens of other bikes over the years.
The problem is a a severe flat spot in throttle response from idle up to about 3,000rpm. When ever I take off from a standing start I really have to keep the revs up or it bogs or stalls. After 3,000 rpm it runs smooth and strong. I had it on a dyno and it pulls 100 hp so I'm a bit puzzled. I've also checked the intake fuel filter and inline fuel filters all look good. Could it be jetting? Valve adjustment time?