The specs are in my sig. I keep getting a miss at 2,500 rpm and above. The #8 plug had unburned fuel on it as well.

My ignition looks like this: Brand new Accel header plugs gapped to .041. New MSD blaster coil, new accell 8.8mm wires, freshly rebuilt dissy with delco parts. The msd 6A box is about 2 years old, but the miss is there with or with out the box hooked up. Also, the knock started before I changed that stuff out.
It started after I swapped in the rpm airgap and a new chip.

I have also played with the base timing a lot, and the miss is still there with about the same knock counts no matter how far retarded or advanced the timing is.

I've also played with the fp to no prevail, and snagging what info i could from winaldl, it does not appear to be running lean.

Any ideas would be appreciated.