I can attest to the accuracy of POHL's statement regarding BA making money with concrete blocks for engines. At TWA we were changing them like underwear and if it wasn't for BA at LHR providing spares TWA/Pan-AM would have been off the Atlantic. We used to fifth pod a lot and it wasn't unusual to drop the fifth pod then turn around and hang it on the aircraft that brought it in because it had lost one inbound. I'm surprised that in any discussion of the idiosyncrasies of the early Jt9D, that the infamous EVC "Wash and W!nk" procedure hasn't come up. When TWA had hung/slow starters we'd open the tins, heave a bucket of WD40 over the compressor case so the EVC link arms got lubed, then some junior mechanic(me) would vigorously excercise the EVC drive bellcrank wi' a bleeding great crowfoot wrench and breaker bar and - voila - turning four.