CAMSIM Boeing 787-9 Cargo V6 - N1-N2

I recently did a test flight of Camil Valiquette's (CamSim) FSX FedEx Boeing 787-9 Cargo AGS V6, one of his long series of 787 and other airliners. The 2D wide panel is appreciated, the range is spot-on, and the only tweak I've applied was to reduce some flight tuning numbers from the default 1.0 value to 0.7 for elevator_effectiveness, 0.6 for ailerons and rudders. And I'm pleased with the results.

But, at high altitude cruise the N1 value is in the low 70s, the N2 in low 80s. I realize the Dreamliner's GEx engines are the latest-greatest, but surely that's not realistic. Anything to be done with its aircraft.cfg or would it require a deep dive with AirWrench or other editor into the .air file?