I have a big bear 2wd that has 25in. vampires on the back and a 2000lb warn winch on the front. My 4wheeler doesnt seem to have much top end power to it and its a 99. Do all the 99's seem the same way? And also my clutch seems to slip some. Is it the big tires that are causing this? Oh and also if u can get it out and u want to take out the spark arrestor, it gives u a noticable power increase, sounds great, but you will have to adjust your carberator and it will cause it to have a lot more blow by in the air box. Also my brake pads are already shot after 6 months, is it all stock brakes that do this or do i just ride excessively hard?