Sounds like valve float. I think you can confirm or rule it out on a vauum gauge if you try.

Run it out the from under the hood, to under the wiper, and tape it down. (sounds a little hill billy, I know ...)

If you see it really bounce down on the miss (like a big drop) it's likely because the intake valves are floating and burbing compression back into the intake.

No matter what the miss is, it will move, but the affect will be dramatic with a valve float/bounce.