Stuttering carbs

[robw]

Hi, I have rode about 300 miles on the Yamagamma and when I shut the throttle the bike stutters or surges. It runs very well in all other aspects. Is this a needle problem, its on the bottom groove at the moment.
Rob

[muttsnuts]

could be float height is sligthly wrong allowing fuel to be sucked into the engine on the over run, I'd check your float heights first