Hello, I just finished building my motorized bicycle (skyhawk48cc/pantera) today and got to ride it twice. On the second ride I made a sharp right turn while going fast. While on the sharp turn I heard a pop on the engine (i hope the engines alright). I pedaled back to the garage with the 415 chain severely stuck inside the engine sprocket. Possible lessons (chain was tight), use the chain tensioner, maybe go slow on turns when testing it out. Anywho, any suggestions for popping out the chain? its stuck tight.