should have updated this long ago ..
there is something wrong with one of the reluctor rings on the back of the rotors. pull the rotors off and make sure they are both intact, that the holes are spaced right and that there is no slag or casting defects in the holes for the reluctor ring
you were correct, one rotor, had a damaged reluctor ring, was missed during installation, after taking it off and looking closely, with the replaced rotors, it looks like it was dented, and the holes had abnormal spaces, comparing them.
Thanks for the advice :) much appreciated.