Valve spring help.

I decided on Comp cam springs with 10* retainer and locks. got everything from summit, finished one side got to the other and 1 of the double grove locks was incorrectly machined and would not fit together properly. When I compared it I could see it was mis-shapen. I was changing the springs on the heads, so I had everything ripped apart hoping to get it back to the track on Sunday. I called Summit and they promptly over nighted me a new set, but suggested I call Comp cams to tell about the problem. I talked to a total *** on the phone at comp cams and he made sound like this is a common problem and they won't do anything to fix it. Just one more bad parts experience, I won't buy from comp cams again!