I've got to agree with Minnflyer on this one.

I used to spend time balancing props on all of my planes. But I found it to be a futile practice. You can balance the prop but there are too many things out in the world to throw that prop back off balance. Touching the runway with prop, having a rock or pebble kick up into the spinning prop, even kicking back against a chicken stick can change the balance. Because of all of this I quit balancing props long ago. On a new prop I take a quick swipe along the edges with some sandpaper to remove the razor edge that some have, then I put it on the plane and fly.

I have engines that have literally hundreds of flights on them and I've never had any problems that come from and "out of balance" prop. IMHO we have enough things to worry about in this hobby without making extra work for ourselves. Not spending time balancing props is time I can spend on other things.

Just my 2 cents worth

Ken