It seems like maximum cruise power (based on the tables) cannot be achieved without exceeding 100% engine RPM. Case in point: I was cruising at 16,000 at 1250 prop RPM with engine RPM just below 100% (e.g., below the thick red lines). At -29 deg. C the cruise tables indicated maximum power of about 87%, but I was only up to 70% torque, with ITTs around 810. I could push torque higher with the ITTs staying under 850, but then engine RPM would go past the red line. The red lines tell me that's probably a Bad Thing, so I tend to watch both ITT and engine RPM when setting power, whichever gets close to red line first is were the power is left.