Having learned the hard way, it's worth the few dollars to buy a decent balancer like the Dubro or others. I double checked my props balanced with a cheap balancer and found them all needing to be rebalanced. It's a small engine, but an out of balance prop can damage the engine mount bolts, servos and receivers, and glue joints. They can also rattle out your landing gear bolts like it did mine.

edited for spelling