Back when we were racing Healeys, MG's, Triumphs, Jags, etc., carb tuners kept a handful of needles handy, and a few different piston springs for tweaking the mixture. Another trick was using different weights of oil in the dampers to alter the speed of the piston response to throttle position changes.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!