So, i recently had my chain break on my motor and they guy i bought it from had a regular 1/8 bmx chain on it and im guessing thats why it broke. So i got a 415 chain, it was a little long i took 3 links off and it fits perfect (without the tension-er, i dont know if that is necessary.) So Long story short, I figured out today that there is a little rod and a ball that goes in the middle of the motor sproket? When i took the Covor plate off nothing fell out and i dont remember anything ever being in there, but now that i have the new chain on , the clutch cable wont tighten and i cant get it to move. can anyone help?