I've got Metro 4 pot fronts and Fiat X1-9 rears(disc), along with tandem/split master cylinder and hand brake cables. I've just bust the bleed nipple off the O/S/R

, so I'll need to change the caliper to test them out (FIAT= Fix it again tomorrow). New stainless steel bleed nipples to be ordered.
Andy. Your bias adjuster I presume it reduces braking at the front? What's your % front?
I also have Fiat 132 rear calipers (larger diameter piston) but might be too much.
I'm also going to get this beast on the road soon!!!!