Tightbond is ok, or any of the yellow wood glue. I'd personally not use superglue.
After you score it really well... give it a whack from the low E towards the high E... it should pop right out. Use a small punch and a really light hammer and presto. Do it in that direction and any "chip" will be on the low E side, not visible from the top. You make the finish repair after its all and together. Also, the pre-slotted nuts from graphtech can be a pain in the wizzwazz to install. Be prepared to do a lot of sanding. The come a bit wider, a bit longer, and a bit taller than you'll ever need. Sanding seems to work better than filing on those. Files seem to skid off, while sandpaper will actually cut the material. Use a 220 grit then a 320 to fine fit, and 400 to "polish" it out after that. Fit the width, then the elevation, then fit the length (low and high E edges). I've done it that way with them... no issues, except to get the elevation right, its a lot of sanding.