Gunsmithing Dust cover Cerakote question

What temps are guys pre-heating to clear the oil that seems to never come out of AR dust covers? Concerned about the spring/detent assembly. Thanks

Put it in the oven at 350 degrees for awhile. Pull it out and soak it and put it back in for awhile longer then soak it again. Blast, spray and cure at 200 degrees.

Casey