Generally speaking I mostly play pick, nearly there with the finishing touches. I bought two sets of nut files to finish the job off, the first set of multiple files in a small holder has already hit the bin as they were absolutely useless they barely made a mark on the plastic nut. The other set are great, up to a point, they cut a decent groove, trouble is they leave a v shaped valley and I want to have the bottom of the notch gently curved and not so sharp.