I got a new grizzly 700 last year, I have 27x12x14 mudlite xtr's on the thing. i put a clutch kit in but it still seems to bog some. i took it to the shop thinking something was wrong and they said it was probobly just the bigger rims because they rob some power. have any of you experienced this with 14" rims and 27's? should i change to 12" rims?