Anyway, I eventually did find a small crummy looking shop in slough, and these guys were *lovely* and went diving into drawers and eventually found M8 x1.25 screws just perfect for me. Paid £2, he refused my £2.50!
So, (very long) long story short, refurbed the back calipers, installed the back brakes.
Note that Brembo rear pads do NOT fit properly, I had to do a bit of surgery with pliers for the pads to sit flat on the pistons.
Then tightened everything, and then I went on bleeding the system using that famous pressure unit. Removed the broom handle that was keeping the pedal down.
It went swimmingly well, I pressured the unit to 10psi, I don't think I needed more than that. Wend bleeding the calipers in turn, even did it twice, tapping each caliper with a rubber mallet to remove any bubble. Removed maybe 2/3 of a pint, and it now runs clear.
Then went on to press the brakes, pedal is very firm, went on and gave it a good wack or two, then went all around with a paper towel to look for leaks. I DID find two, typically at the junction copper/union I had made. I was not sure how much torque to give them, so i tried to be conservative since copper feels like cheese. Went on and gave them another 1/4 turn and tried the pedal again, and it seems to have stopped it...
Now *question* guys... I can turn the discs when I push with one hand, but I KNOW the pads are touching; is it normal? Is it something that will 'ease off' when the brake wear in?
Question #2: with these checks done, would you guys be happy to take it for a test drive once the wheels are on?
Pics!