For fuel economy you could try a little more advance. My initial is at 16.
I curved mine to start advancing at about 1000 and all in at approx. 2700.
Total w/vac for me is 16+24+8=48 total at cruise.
Some here have said it could/should be advanced a little more for best economy, but my vac can is set to a max of 8. I'm pretty happy with the fuel economy. My problem is altitude and jetting. I run a little on the rich side sometimes but I think I've found the middle ground.
Try kickin it up and see what happens, you can always go back.