CM871 poor power and fuel econ

[Grounded Pilot]

Man, my hats off to you guys here on the forum and Mr Rawze!! Finally got it headed in the right direction I believe. This thing runs so different! Everything is more smooth, acceleration feels much better and shifts seem easier(maybe in my head, maybe because the motor is less erratic). I did 6.7mpg (paper figures) from fill to fill on a 110 mile leg running north on I35 through Witchita, KS at about 59k lbs and 73/76 mph!! This thing has never averaged over 6mpg with any sort of load on it. Was getting 7.3mpg on the dash after getting up to speed up until I was exiting to hit the TS.

Thank you all for the help!!