I have tried all the bleed techniques listed. Removing the master cylinder and trying to invert it to remove the bubble from the top came closest, but is rough on the lines, connectors. A better solution i came up with:
Open the bleed **** 1/2 turn, attach a tight fitting silicone or such tube to the bleeder about 2 feet long. a 90 degree plastic elbow right by the nipple end is much easier to manage. Bring the tube up through top and fasten it into the neck of an empty pop bottle or such.
Now , with someone standing over the clutch resevoir, constantly topping it to the fill level, another person cycles the clutch up and down roughly 2 seconds travel down, 1 second pause, 2 second travel up, 1 second pause; without stopping for about 200 ml of fluid, or about ~10 refills of resevoir. Then with the clutch pedal depressed by one person, the other goes down and closes the bleeder.
This method has rescued 2 trucks now that would not co-operate. one glitch that occurred both times was that the bleeder had to be reloosened halfway through, not sure why it creeped back closed. what a miserable place for a bleeder! love the truck other than that so far.