I've got stock spec Napa rotors, and Stillen pads.
Get some brake cleaner and spray those rotors.
If you had grease on them, it might have gotten into the pads, and they could be ruined.
rotors and pads must be kept clean when installing.
I drove mine to a parking lot, and proceeded the standard bedding procedure.
30mph to stop a few times...
40mph to stop a few times.
50mph to stop a few times
60mph to stop a few times
Hurry up and leave before mall cop comes to see what the hell you're doing...