Hi.
Well I replaced the really-rusty screws in the back of the freezer with stainless screws and washers. One at a time as I didnt want whatever was on the other side to fall off
. I cleaned the spots up well with alcohol and squirted a dab of silicone in the hole before inserting the new screw. I crossed my fingers and never heard any refrigerant hissing, its critical that you cross your fingers! Anyhow just finished wiping out (cleaning) the frig-freezer. And will turn it back on, fingers crossed. I will repost if a problem shows up.