I can assure you of two things;
1. The dial is press fit, unless you are crazily fist handed. Removing the dial is easy and non-damaging.
2. Once fixed, it is not too lose that you can accidentally rotate it.
However, the loosening in the fix is not provided by the grease. The key is to wind back and forth the plastic Philips head screw. Somehow it just makes the dial perfect.
Turns the NC2 into a beast in my eyes. they are my daily mods.
@sonicbomb I thought I'd reassure your concerns Your call obviously but if you have a overly stiff dial. You will not be disappointed in this fix, I've done it to three of them.