are the sprockets the same size for a 410 and 415 chain? i have a customer with a 410 chain and it keeps falling off, i am sure he is either taking jumps, beating the **** out of the bike and or not keeping the chain tight. i figure if i put a 415 chain on it it would give a little more stregnth so the chain doesnt brake the next time it falls off. just didn;t know if the sprockets were different sizes width wise?