Not knowing the service history of the bike, it is hard to respond to your question.
Without jumping into any mods right away, I'd put fresh plugs in it, a new air filter, run some Seafoam thru the fuel system, and check the adjustment of the throttle cables. Check your idle speed - the black knob under the left carb - as turning it up a hair may improve your initial throttle response. Synchronize your carbs. You may also want to check the condition of the rubber parts - the hoses between the airbox and the carbs and the carbs and the manifolds. Snug up the clamps on all. Check the squirrel condoms too - the 4 rubber "caps" over the manifold ports and carb ports. Check the exhaust conections as well. The nuts holding the headers, the header to silencer connections and the crossover connection underneath. Look for carbon tracks. Any loose connection on the exhaust will suck air and upset the mixture.
Bear in mind that these are higher revving engines with a limiter around 7300 rpm. Once you get the stutter out of the way, you can look into the mods (one at a time) to reach nirvana. Pipes, jets, drilling the slides, removing the snorkels, drilling the filter/airbox, pod filters/freak, sprocket changes, etc....
The Tech Vault has a ton of info on all these things....
BTW, my mother grew up in Bucks County - went to Bensalem (?) high school. That would be about 70 years ago....
