Thanks for all the feedback! Since my housing is over 1.5 years old and has been on 15 dive trips, I decided I should remove the handles to check the condition of the screws. All screws came out easily and I did not see any corrosion. I forgot when I initially assembled my housing, I coated each screw with Ultra Tef-Gel, which prevents corrosion and seizing. It sure does work! I reapplied The Ultra Tef-Gel on the screws and now feel confident keeping the handles in place for maybe 2 years.