I wouldn't be too worried about how falcons do their head bolt tension as they use a special head bolt designed to stretch (Torque to yield if I recall correctly) and keep the tension correct in a hot and cold situation ,actually in auto engines I find it all the time,, mostly in head bolts but a lot of late model toyota's and things I have seen on conrod and main bearing bolts ,,,,, I doubt the through bolts used in Jabs would employ this type of method to keep them tight,,,although I have no idea ,, so I guess a correct torque procedure would be critical ,even to following the instructions down to the letter like if it says use oiled threads or something like that ,, I've never seen one of those torque wrenches before that you mentioned ,,, they sound cool :)