Plymouth Repair: Vibration after replacing front brake pads, pep boys, auto zone

Question
On a 1998 Plymouth Silhouette - On applying the brakes at above 40 M/Hour there was a vibration in the steering wheel. At high speed or going down hill the vibration was worse, almost dangerous. Last month a mechanic said it was a warped rotor and charged me for turning both sides.(1000 miles ago.) The vibration was completely gone. Since I had used cheap pads from Auto Zone and was hearing a squealing when pressing on the breaks, I decided to change over to ceramic pads from Pep Boys. I replaced the pads myself. I did not bleed the lines. I pried between the caliper housings and rotor to squeeze fluid back into the reservoir.  When done, the vibration upon pressing the brake, is back. This time it is really bad. I also noticed that the lug holes on the rotors do not align well around the lugs as the holes are off center and are about a 1/16 of an inch larger than the lugs. The center hole is nicely centered on the axle hub but the lug holes are not. Is this my reason for a vibrating rotor or is there a certain way (trick) to put the wheel/rotor back after changing pads? I did use a star pattern when tightening lug nut.

Sorry for being long winded and thanks in advance for any help.

Sincerely
Vibrating at the wheel.  

Answer
hello richard
this is the wroang rotor bring it to them and show them did they replace both rotors when replaed i allways do in my shop because u will have troulble because one rotor is thinner than the other one . both should be changed try puting on the old pads and see if you get the vibe pete