The alternate cure temp for sensitive items is 150 degrees for 3 hours. I have never done it but have heard JB weld has been used successfully to fill pits. After it's sanded level you still have to blast with aluminum oxide to prep. Just blast very light over the JB Weld. Devcon steel or titanium epoxy should work well if you have any laying around.
As far a using Cerakote to fill a pit Cerakote will not really fill voids nor will it stick to itself once cured. A better fix would be to sand and file out the imperfections. That's what a hot blue job would usually include as part of the prep.
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