Aye, true: I learned a lot from the old ex-East African Airways guys when I cut my teeth on the DC3 (Dak/C47, whatever) more years ago than I like to think back. One thing I found alarming during my 15 year association with radials was the misconception by some young pilots that turning the prop backwards relieved a liquid lock... Also that it took more than three blades to check all the cylinders. As most of us know, it was nine blades because of the 16:9 reduction gearing. Happy days, the Dak is still my favourite aircraft. I was also quite fond of the metricated Wright Cyclone (Asz 621R) fitted to the An2. Ah, the sound of inertia starters...