Newly installed Heresy safety selector feels 'crunchy'

I noticed immediately that the flat finish on the Heresy safety is a bit grippy, but I like that.

The instructions on their site are good and the install was kinda fun. A video would be nice though.

It works fine, but I can feel the finish sort of grinding against the flat tension spring. Should I work it in? Remove & sand/polish the sides? Dry lube?

How did you get your Heresy selector to feel smoother?