I served on 205 Sqdn from 1959-1961961, and we were singing The Shackleton song back then. It maybe that the confusion about 90% throttle came about as a result of the fact (I believe) that for high altitude-high temperature takeoffs, the Griffons used water-meth injection to give them extra boost. I was only an instrument basher, so I can't guarentee that I know what Im talking about.