Ok, so there are so many threads and I've gone through the stickies my self and havent found a thing there that has anything on this. Sorry for the lack of pictures, but I think its self explanatory.
You need to trim the bases of the detents. The bases are what keeps the detents in place. After trimming the bases you need to trim the thicker part of the shaft. If you do this, and do it in very small increments they should fit.
Maybe someone can get me pics possibly? Mods could you please sticky this to stop the cluttering of threads?
EDIT: Picture, thanks to deofol.