[QUOTE=Gearhead999s;12953007]Now on another Alcon site I find this
Quote:
Monobloc 4 / 6 piston design for high stiffness (firm pedal) & low weight
Piston bore sizes are staggered to ensure even pad wear
Pin-mounted pads provide low threshold pressure and low noise
/QUOTE]
http://www.alcon.co.uk/brake-kits.html
Maybe your calipers are not the proper ones or they were manufactured improperly?
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This parts list clearly mentions that pistons are all the same size - says 6 x 34.9 at the front and 4 x 31.8 at the back:
http://www.alconusa.com/client_images/files/92_1222.pdf
Part list for other kits do show stagger. So I guess it was meant that way.