Some of you folks already know this. New people might not. The Top Flight magnetic ballancer comes with a small metal rod to carry the load between the magnets. It will cary about 4 oz of weight or a 23x8 prop. If you make up a 1/4" slightly longer rod it will carry far more weight. 8 oz+ spinners and 30x10+ props.

Always; check the props ballance before re-drilling, measure that the hole is centered in the hub before drilling.
If you need to add paint to a tip, lightly sand where painting. Krylon makes a clear plastic compatible spray paint that dries in about 10 minutes and stops running in 5 minutes.