Good to know, ratrodking... I'm thinking the preflared tubes are the way to go as well... I figure the less we handle them the better...
I just wish there was a brakeline schematic with measurements available online... then I could go buy everything we'll need for the lines today!
I'm hoping new lines solve it as we know they have a couple wet spots and small leaks... if not I guess I'll be looking for a master cylinder as well... THAT will be fun to try to buy on a 72 year old truck! I hope if I need one I can go with something newer!

~Trev