What a good write up and I shall refer to it when, and if, I upgrade.
You have also given us a wonderful to testimony to the benefits of 'experience' as opposed to theory, and those of us, including you, KF, Old Mc, Bovey farmer, BB and others who keep explaining the value of BOTH theory and experience, will be mighty pleased with this illustration of how experience can, at times, be more valuable than theory alone. In fact, to those of us who simply want to use a tool, we need not know the theory of how it works, but do need to know only the most effective way of using it under different operation conditions.