The beauty of the ERA big brake system is that there just isn't that much that can be wrong with it.
Assuming your calipers and the master cylinders all work, and are bled, and you're now getting new pads that I know are good, the only other things that jump to mind are, maybe, that your brake balance bar is not set on the angle that the instruction manual outlines. I recall that it even stresses the fact that the front brakes require three times the fluid that the back ones do and it gives you a little picture of how it should look. And with the Sierra calipers you should have three shims between each wide spacer and the caliper ear. Make sure that the rotor is centered in the caliper to within .060" and, if it's not, then tweak it with shims until it is. You can add shims between the mounting bracket and the upright if necessary to try and get it within specs, but you shouldn't have to. If you do all that, then your brakes
have to work, there's just nothing else that can go wrong, at least that I can think of.
