Todd, I dont know what brake kit you bought, but I bought mine from Speedway. Turns out the calipers are 'rebuilts'. Check you dont have a 'sticky' piston and that your flexi lines aren't kinking when you turn the steering.
If both were hanging up,both wheels would get pretty hot real quick.Just a thought...For disc brakes your
proportioning valve should be 2lb. just in case you've been sent the wrong one!

Hope this helps. Jock

Correction I meant residual valve!