Mine are as well, even with two washers on the back mounts. It's also still making knocking sounds when I hit bumps in the road. Probably from the pinch seem hitting the rail. I'll add another set of washers and see if it spaces it out enough.
Really glad I found this thread. I just installed these on our JLUR and experienced this exact thing. Mostly the driver side but also a little bit on the passenger side (I think).
Also noticing a trend of Sting Gray with DV8 sliders!