Ok, today I bench tested the engine again, with the new Orings and gaskets (and ring)

20% wildcat fuel

15x8 @ 9100-8800 (not stable)
16x4w @ 9900-9600

The only thing not looking good is the diaphragm, its not flat, a little bulged, anyway I can have decent transition
Is this thing enough to steal my missing RPMs?, I know Chip said it does, but I want to know everyone experience

Thanks,

Daniel