I bought a Murray Track 2 on CL for my daughter. Been sitting for awhile so cleaned the carb, new spark plug and got it running and good idle. It seems to be sluggish on take off and takes a bit to get some speed. Maybe it needs a new clutch? I pulled the side cover off and it has a weird looking clutch. None like I seen before. It's different looking from all the replacement clutches I been viewing on line. I has been many years since I toyed with mini bikes but I don't remember the chain being so heavy duty looking for a MB. Can anyone advise where I can get a replacement clutch for it? This MB appears all original with a 3.5 Tecumseh engine.