help with vacuum advance

I personally think that with a 22+10 I'd leave the vacuum off unless you intend to use it with non ported manifold vacuum.
I had mine at 14 plus 18 mechanical with ported vacuum on top of that and was getting some nasty preignition at wide open.
The engine likes 12-14 at this elevation (5,400 ft) and with all of them working together it was too much, so with 14 initial and 18 more mechanical all in by 2,500 rpm it has a 32 total and runs great.