Avs2 650 tuning on a 340

fez440 said
I checked timing. Hopfully you can help me out if this sounds correct. Bumped engine till it pushed my finger off #1 spark plug hole. Moved balance to line up Mark's ( groove in blancer lined up to 0 on tab. Rotor is pointing just past #1 plug. Less than half way to #8
I don't have a piston stop to try it that way.

That didn’t tell you anything. You need a positive stop to verify TDC.

And as I mentioned earlier it appears you are beholden to a certain A/F number. And I would say again unhook or ignore that gauge and make it run correctly and then hook up the O2 sensor again. That gauge can and will lie to you.