Need help with Baer Brakes

[DFRESH]

Need some opinions of those of you running these setups. Got the fronts installed (14inch Pro Plus on ATS Spindles, rear is still stock drum, master/power booster stock--ok to use per Baer) and began breaking them in last night with light driving per their instructions. On the first night, about half way through the "light driving" part, a Tahoe swerves over to check out my car and looses control momentarily---so naturally I jam on the brakes---later on in the drive, I notice a slight vibration in the pedal and the steering wheel upon braking. I took it home, let it cool off for the night. Tonight, I take it out and same vibration is there, at braking speeds over like 40. I've never broken in a set of these before, but plenty of other brakes--could that one jam of the pedal have warped these rotors all ready? If so--can these rotors be turned? Anybody experience this or something like it? Thanks guys--would be nice if something went right--just once.

Doug