Only slight issue I thought I had was the output jack didn't fit into the rout quite right, but bent the contacts a little bit and done now... Got no idea about doing an ash neck, need to research that a bit,,, last one was a rosewood fretboard so that I think is just a dash of lemon oil.
I had the same issue on an ST kit - I used a dremel to make a bit more space underneath. It was a quick and easy fix.