Carb issue?

But if you did your due-diligence correctly then I have this idea.
Btw I also have a 4.04bore, zero-deck, alloy headed, torque-monster, but stock stroke,lol.
Ok so what (*1) I did was to Tee into the PCV circuit with a short hose and a capped end. Then I drilled the cap bigger and bigger, closing the throttle as I went and retarding the timing, until I got what I thought was a nice idling,nice driving, no tip-in sag, combo. I got the transfer slots to dial in, and the idle timing to 14*, with the mixture screws in the center of their range. So I drove it like that for a while, to be sure. Then I measured the hole, calculated the area, divided it in half, and drilled each throttle to the closest next smaller size. Badaboom!
(*1)
cam was 292/292/108 advertised in at 11.3Scr, with a 750DP at 930 ft elevation. This is the biggest cam I have tuned, and all were at this same altitude, in my garage,lol. IIRC this was rated 248*@.050