i have a EPI clutch kit in my 2010 grizzly 700, part number WE391077. I run 27" bighorns. After installation i have not really noticed a difference with the low end power than when it had a stock clutch with the same tires. Did i put in the wrong kit. I find i have to rev it up to get the power going. What can i do without messing too much with the motor. I need to get more low end grunt and have it hit faster.