My 318 dyno results

That small cam does not want additional air from the secondaries. Close 'em up tight, but not sticking. The PCV will be sufficient.
The thing is; at low rpm that early opening intake valve (assuming you got the cam install right), is allowing a very large amount of exhaust back up into the intake manifold, and that is why your idle vacuum is so low. It may be too low to keep your PV system shut off. That would explain why your mixture screws are unresponsive, and it might explain your raw-gas smell out the tailpipe.
If you have the T-port sync set right, and the idle-timing around 12 to 16, then it should be easily possible to stall the engine by closing one or both mixture screws. If it doesn't stall, you have to ask;"where is the engine getting it's fuel?" The square transfers should not be enough, even with an excessively high float level. So you gotta look at the PV system.