LOBO (Legacy Owner and Builders Organization) has a Legacy training manual. It has recommended power settings, speed, altitude et cetera. Working with the simulator I have made many mistakes, shock cooling for one. My conclusion for long descents (like out of the Rockies to the eastern plains) is that high RPM, low manifold pressure, and gradual enrichening with a 1000' FPM descent at 220kts works just fine. Engine temps stay well above 200 degrees. RW? Dunno.