i just bought a 05 brute force 650 with it knocking with 1200 miles, i bought it from my friend that i ride with alot. we were just going down the trail when it started knocking so i know it has only been rode maybe 1 mile knocking at low speeds. got it home found the knocking sound in the front cylinder, removed the front cylinder and found the rod bearing is bad. can move the rod up and down alot so i think it is the rod bearing? my question is can i just repace the rod bearings? can i repace the rod bearings without spliting the case? where is the cheapest place to buy parts?