Put a drop of blue loctite on each screw. The SLG has a polymer frame I believe so dont over tighten the screws as you could strip the threads out of the frame.
I had an SLG, this is common stock. Yes, the framy is a hi-test polymer, but iirc there are metal threads for the ASA bolt. You can loctite like Jackson suggested, of you can wrap that screw with teflon tape then tighten it - that worked for mine.