Theres no substitute for the proper tools.
I have one coming along with a CG balancer even though my home made one seems good enough.
The ACCU-THROW is going to get a lot of use here.
The prop balncer???????????
Well I had one and it worked but one day I decided to make an adapter and spin my prop on my dremel tool.At 15,000 rpm I could feel the harmonic vibrations while holding the tool in my hand so now thats how I check my props now.
First the balance then the hi- speed test