Recently finished my 72mm build and after it driving pretty decent without a tune it just got pretty bad. Anything under WOT it bucks and stumbles, once it goes WOT its slowly clears up and takes off like it should with what it seems like no loss of power. Fuel pressure is set at 40, timing is 10 degrees spout out, Autolite 23's are gapped to .032" ,1 year old ford racing 9mm plug wires, 1 year old MSD 6al, brand new coil, stock distributor with a msd cap and rotor(should be changed but arent THAT bad). Plugs are greyish and seem fine. Fuel filter is fine, gas doesn't have water in it. This just happened all of the sudden basicly, drove it 60 miles out of state and back and wasent bad at all then over the weekend it started doing this but is now at a point where it is completely undrivable.