Pulsing pedal then most likely has "warp" rotor(s). Warp mean the rotor will fail paralleling spec. The test hard to do for most DIY and even mechanics. An minimum You have to take thickness at several spots and can be a false results because the small amount to measure. 0.
0005" is too small for many tools available cause only read to 0.
001. Some digital mics will read 0.
0001 but anything tiny bit off including user error can cause false results.
Warp rotors are often sign of pad dragging cause by bad caliper(s) or hydro problems.
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)