Ignition breaking up at higher rpm

OK, super embarrassed here. First checked everything for corrosion, all shiny clean. Checked voltage at ballast 12.4
Checked other side 6.64
Checked in crank position, starter disabled 9.45
So far so good
Checked distributor end play .120-.140"

Looked at rotor and bottom of cap. Rotor burned looking where it contacts the coil post. Bent up and polished shiny. Dumb oversight. Took air cleaner off and ran hard full throttle-no load like an idiot. That's when I saw it, the secondaries started closing and the fuel diminished. I was starving for fuel.
Put a gauge on the fuel line 1pound. Fer real? Check all the lines again. All clear.
Reluctantly, I drop and disassembled the Carter pump. Oh my god!!!! The inlet screen was packed with real fine sediment rust. Now , I had cleaned this tank yesterday. Guess I shoulda done it long ago. Road test and all is right with the world.
I appreciate everyone 's input. It made me go back and look at everything I overlooked and all I thought was good. I thank you all.
Just wish I hadn't convinced myself into changing all those parts beforehand.
Live and learn.
Thanks again