Jetting seems a tad low for a 440. I ran 72-80 on a mild 340 and had no "rich" issues. Best way to get the tune is to make sure everything else is right, timing is a good place to start. That's a fairly mild cam, but it might like some stall. You might want to go up on the PV. I'd think it would pull good vaccuum. A few more things, make sure you floats are set right, I like to have them a tad below the sight plugs, and make sure you don't have tooo much fuel pressure. I'd think 31 squared on the squiters would be enough... Have you tuned them for best vacuum at idle?