have a 98 banshee 64.75 bore stock stroke trail port coolhead 18 cc v-force 4 reeds stock carbs 1400 ft elevation mains now are 280 and pilot is .025 . dosnt have good throttle response from idle to 1/4 throttle. would the pilot being to small cause this. it also has t-5s and +4 timing any suggestions would be helpful thanks in advance.