I have the H&R DRS 15MM spacers on the front. I noticed today when I took my wheels off, that the lip that goes around the inner portion of the spacer was "missing". I never noticed before, but then again, I didn't install them myself and I've never looked too closely at them until now.
I did find the lip, stuck inside the wheel. Both of my front wheels were like this. The rear wheels are perfectly fine and the lip is intact. One thing I noticed is that the edge where it "broke" off (???) is pretty sharp, but not a completely clean cut. Does this sound like the lip broke off, or was purposely cut off? I can't fathom why the shop would do this though.
It's been over a year since I had them installed, so going back to the shop to ask them probably wouldn't be worth the effort.
Also, you can see the lip on the DRM version, which looks the same as the DRS, here:
