Ok sorry for not answering sooner. Heres what I did.. Under the stainless screws was a rubber (?) maybe plastic washer I put a screw driver under those and lifted them up until I could grab them with vise grips., tore them off so I could get to the head of the screw. Tightend around the head and just un screwed them. Simple procedure. I couldnt have done it any other way. I tried all those "rust busting" sprays. Even one called "freeze your nuts" (really) My local repair shop lent me a can.It takes care of the rust and freezes the screw or nut. to shrink it. Nope didnt work. Their was nothing wrong with anything, no rust (they are stainless screws) So I put some anti seize grease on them reused them and I'm good to go.And yes I tightned them down as tightly as I safely could.. Thanks guys for all your suggestions.