This quote from
Advanced Pilot is worth noting too:
If a pilot is NOT prepared to invest in a good monitoring system AND to understand what he is doing, then my best advice is to use full rich for climb, never exceed 65% MP and RPM settings, and lean to any setting that seems about right. For the really abysmally ignorant and unequipped, just leave it full rich all the time!
CCQ did not have a "good monitoring system".