318 Tuning Tips - Help!

Awesome response, thanks guys. Now i'm gonna make myself look even dumber - what is a power valve, where is it and how do I replace it??

I'll get the timing light on it this weekend, but retarding the timing doesn't help any, I've tried all sorts of settings and it goes best where it is at the moment.

I don't have a vacuum leak that I know of, but I have a couple of small header leaks where they bolt up to the heads... could that be a problem?

Thanks again for the input! :)