Hi Jim,
From what I remember, I simply got a set of the ABS calipers and discs and swapped them right out. I had no issues, so you may have gotten the wrong ones inadvertently. Obviously you have to use them as a set. So hows the racing so far? I know that Rd Atl has it's first race in march. Doubt I will be home, but I am hopeful.

Tristan Smith
Buffalo's Southwest Cafe
ITA Nissan 240sx #56