Success!!!

Thank you to everyone. Turned out to be the disc valve. Mine was freely wheeling. After finally figuring out what part was being talking about, and finally figuring out how it came apart, I found a lot of fuel on the back of it. Cleaned it up, reassembled with some friction. I've disassembled and reassembled this engine so many times I no longer need the diagram. I would have never come up with this on my own.

Anyways, 1900-7200 on 30% magnum heli, and the power is back. I don't understand why this part can't be free wheeling, seems counter to everything I've thought.

Thanks again!
Robert