Hey all, this is my first post on the forum so if im doing something wrong, let me know. I bought a 05 brute force 750 yesterday that didnt run and the owner thought the motor was seized. Today I was able to get into it a bit and discovered that the motor wasnt seized but the tip of the sparkplug that goes to the rear piston was broken off and the motor turns over fine but something is causing the rear piston from completely going all the way up, thus keeping the crank from rotating freely. What kind of problems am I looking at and what could have caused that? the bike has 198 hours and 2250 miles with brand new aftermarket rims and tires and I paid $1200 for it. I am quite mechanically proficient but ive never dealt with an issue like this before. Any advice would be greatly appreciated.