Jay - Put a drop of antisieze on the threads (and maybe under the head
too) of each screw that has to go back into a threaded insert. Don't
let ANY antisieze get near the Philips driver or the screwheads or
driver will cam out on reassembly.

Antisieze seals the thread from further corrosion and does wonders for
the next time they have to be removed. Stainless screws especially
need this treatment, as they too will corrode in the presence of
aluminum.