Can't get it to idle right!

You say 30 total advance. What's initial?
What's initial w/o the v-can?
How much does the v-can add?
What's your manifold vacuum reading (does it bounce around a lot)?
How many turns on the idle mix screws?
How open is the idle screw?
Are your transfer slots overly or under exposed?

Lots of things to check on and see what it might be.

As a general rule, more cam = more initial timing (but you want to limit total if you change the initial). Initial timing with a decentish cam can range from 14-28 degrees but it will depend on many factors including ACTUAL compression.
More cam can also take more idle air which can expose the transfer slots in the eddie carb. Some carbs will require holes drilled into the butterflies to get enough idle air while keeping the transfer slots closed down enough - search and you'll find a lot of info.
Easy way to tell if the transfer slot needs attention: close the mixture adjustment screws completely. Don't over torque, just lightly hand tight. If the engine keeps running, you're pulling fuel from somewhere and it isn't the idle circuit.