All the radial engined airliners such as the Connies, DC-6, DC-7, Convairs etc etc., operated MILLIONS of hrs lean of peak, the only way they could achieve the range required for trans-Atlantic and trans-Pacific ops. Only they didnt have sophisticated EGT guages then, so they used BMEP instruments instead. Now that we have the technology tosee whats happening in the cylinder in real time, we discover that they were running LEAN OF PEAK.
I guess that millions of hrs experiance does not count for much in the light of conventional GA wisdom.
Count me in for the Advanced Pilot Seminar in Sydney.