@Low&Slow NTC is the devil. I don't think we came back with an ETF above .95
Also, our birds are 2010's. They're still running strong, but that is a direct result of the mx program. The KS and LA birds we traded for needed some loving...
Our 1978/79 T700 powered A models consistently had .98 or higher with all the desert ops we do, before they were converted to A+'s