I am having my Remington 700 bolt DLC coated. Can someone help me as to how to prep it? First I removed the firing pin, spring and shroud. I taped off the bolt handle and knob because I dont want that part coated. Do I remove the extractor or leave it in place? The extractor is the only part that I am not sure how to prep. I also had the body of the bolt sandblasted to remove the cerakote.