. Find a shirt button and put it under the butterfly to raise it up, if it works for you then find a permanent spacer. File the underside of the butterfly so no burrs to catch on the strings. Graphite dry lock lube in the nut slots. Number 2 pencil will work but lock lube is better. Did you 'upsize' the strings from factory 9s? Then likely strings are binding in the nut slots. Either file the slots or go back down in string size. Keep the factory nut, some of the graphite ones are too soft and the strings dig in and stick, some people mess up their nut replacement -- it's a critical functional part of the guitar tuning system and not to be trifled with even though it is small and 'easy to replace' from first glance. .