I do a quick gravity balance on all of my bikes. Without a balancing stand, just remove the outer spacers to reduce friction.
I got tired of buying the stick on weights, and I'm a big believer in recycling, so I make my own.
Just make a rectangular form from heavy duty foil, melt some lead in an old tin can with a propane torch, and pour into the mold to about 1/4" thick. Score every 1/2" with a chisel. Break off the amounts you need & stick in place with RTV.
We don't stop riding because we get old, we get old because we stop riding.