After i bend it goes flat, after tremolo some of them goes flat but mostly sharp. I assure you nut is fine. I don't know how to setup prs bridge if i remove and examine it. I've put daddario friction remover under the screws and on the nut even nut is really fine instead of oil cause i dont have it right know. I don't know what else to do, i can't even play it. What should i try to solve this?