brakes avid juicy rotors

I just installed new brake pads on my Avid Juicy 5 rear brakes. I purchased a compatible knock off brand- KW permormance brake pads. (nzkw.com) They claim to fit Juicy 3, 5 and 7. The new pads seemed to seat just fine in the caliper but I noticed very little clearance beetween the pads for the...