I'm inexperienced at carb tuning, please help

Engine: 408 magnum Aluminum heads 10.6 compression single plane intake
Cam: 241 247 @ 50
Carb: 750 Mighty Demon mechanical secondaries
Primary Jet: 72
Secondary Jet: 84
Inner air bleeds: 38
Outer Air bleeds: 93
Power Valve: 5
Annular booster

This is in a 67 barracuda with 4 speed trans

I have installed my wideband on the car and had an issue with the car. I set the idle to 13.5 - 14.5 afr but it would cruise very rich like <10 afr. After confirming that the power valve was not blown, i decided to drill the air bleeds to a 93ish (original were 70). I set the idle to the same 13.5 - 14.5 and confirmed with vacuum gauge. (It pulls around 10 Hg for vacuum at idle.) The screws are only about 3/4 turn out. The cruise is now acceptable at 12.5 - 13.5 afr. Now the when the throttle is pressed at cruise (2500 to 3000 rpm) and sometimes when just starting in 1st gear, the engine goes way lean and bogs, 17+ afr sometimes. When going full throttle through the gears everything appears fine, which makes sense I had it on an engine dyno less than 2 years ago. I tried a 6 and a 7.5 power valve but that does not solve anything, just makes cruise richer with the 7.5. I'm not sure what my next move is. Has anyone had a situation like this?