Here's the hint from Hell, Louise: Those stubborn clutch line fittings to slave and master cylinder. Somebody recommended heat. I tried my mini propane tank nozzle firuing it up but it flamed out either when it fired up the saturation of liquid wrench or because, as the canister said " use upright". So I still needed to heat it. Here's the hack: I took a six way electric strip and plugged in two soldering irons and held them on the joint for what seemed a long enough time. Voila! 45 years of seized junction cracked open like Madonna on a Saturday night!
I'm a genius!