Dave,
Second day on my flight home from Al (two people onboard (240 + 200 lbs)) I kept engine RPM at about 5150-5250 all the way:
Distance Flown - 661 SM
Flight Time - 6.8 hours
Average ground speed - 97 MPH
.
Did you refuel or was this on a single stretch? And would you say with hindsight now this fuel consumption is typical for the m24 with the 915 engine?