Bob...reused mine and changed the rotors out four times. Used red loctite on them and made sure they were torqued to 125ft-lbs.
Don't really need the small clips.
When I changed the rotors out, I made sure to clean/sand/wire brush the rust off the inside of the rim that contacts the rotor. A few of the guys around here that didn't do this thought their rotors were warped. They took the wheels back off (front), cleaned them up and the "warped" rotors went away.
Good Luck with those bolts...they are a mofo!