Angier, your fuel flow rate is also way wrong.  I had a similar problem with my MVP 50 except it was fuel pressure and MAP.  The problem in both cases was wiring connectors.  That is where I would start.  Cheap wiring connectors are the curse of aviation reliability.
Craig Berland
IV-P N7VG

Today's 2hr flight was normal in all respects with the single exception that immediately after liftoff, the MVP-50 began screaming 'check RPM'. The RPM display was close to 4000 and fuel flow spiked.
Nevertheless engine sounds remained normal. Sure got my attention.
At 6:29:28 and just as the gear started to come up is when the RPM indication spiked for all of about
5 seconds. Haven't seen this before.
What would the common, everyday prop over speed sound like?? not that I ever want to hear it....

Angier Ames
N4ZQ