Just got a 2014 xmr 650 from an older gentlemen who only put 17 hours on it. Took it out today and was pretty impressed. Only complaint would probably be the tires. Wondering if anyone has taken off the mudzillas and replaced them with a lighter tire and gained any power? Out of the hole the quad seems very sluggish but once it's moving it feels great, I would think this would be caused by trying to turn such a heavy tire. Buddy just got some swamp lites and I really liked them and how they preformed in comparison to mine. I wasn't looking to do a clutch kit, just hoping a lighter set of tires will get my take off a little better. Next question is what should I be doing/checking for now that i have roughly 25 hours/300 miles?