Well today I had another crack at the brakes. I'm nearly there but am hoping someone actually chimes in. As per Coolerman I jacked the truck level and adjusted the brakes first, then bled. The rears were loosey-goosey! I could turn em with one finger! So I adjusted em up well tight and then bled again. A little air came out but other than all signs pointed to things being swimmingly. So I took it for a test drive. It now takes three pumps from so-so-but-I'd-hate-to-brake-in-a-hurry to sorry-am-I-now-in-an-AMG6.3L?? So things are definitely improving, but other than bleeding them again. And then again. And quite possibly again until the national budget gets back into surplus, I'm out of ideas. On a potentially related note, would a faulty booster have anything to do with this?
I also changed the window winder regulators. But I really need to change out the felts to make them work properly. Lubed the channels with graphite powder.
I also chased up why my indicators now don't work. But I didn't chase far as I am a wiring moron.
Deano got bored and decided to add a grab handle above the pax door. There's two screws there that hold something in, and the oh-sh!t bar from above the glovebox was within about 5mm of fitting, so he got medieval on my spare with the 4lb and had him in using spare (longer) window winder regulator screws.
Took him for a longer drive today, around three blocks instead of one. It feels a bit gutless, but perhaps that will change after I add a muffler (straight through at the moment). The doors rattle like ****, and he tranny whines (though it sounds fine, I think it's just got that good 1960's whine

), and it's more agricultural than anything I've ever driven, but jeez it's a trip! Top is a big jump from second, which is a bit odd, but I guess you don't really wanna grab top unless you're doing 40mph+
Anyway, time to do some more brake research, see if I can sort this pedal out.