Crikey, I've just applied that to the other stuff I fly MJ and it's almost spot on. Every day is a learning day!
By the way, has anyone ever used Piper's POH recomendation's for range of going full throttle and then leaning out until you get the RPM you want? Obviously this won't work on a wobbly prop but I fly Warriors too. Always seemed a bit dodgy to me, although having said that, the mixture control on Warriors isn't exactly subtle is it.