Hi, I'm Not a brake Xpert. However, with similar symptoms on my '99 E150/half-ton 4.2L,snooping around it seems the Rotor Business is a tad overcooked. Supposedly, there is a CEMENTITE deposit of sorts that build-up on the rotors. This patchy deposit can cause the Pulsations at the end of moderate-slow braking. Anyway, I got out the drill with a sanding disc(wood paper type?), and attempted to gently/harshly spin and brush & DEGLAZE the invisible deposits off the rotors. I gives a new swirl pattern to the rotors(also,cleans the rust and buggers). Anyway, IT worked!! I've done it a couple times,when I rotate the tires and or replaced the pads(get soft ones that don't chew the rotors nad make noise). So far, I've avoided the Turn/Replace $Rotor$ blues.Please excuse my errors, but there is stuff out there about this issue.Good Luck!
