Re: question about slide
Remember that GI is just that, the general issue model. The slide will probably have some play in it, unlike say a Gold Match, or something that has tolerences within a hair, and has been accurized.
If you are concerned with the scratching, send it on in. I remember that Marlin had that difficulty with his right after SoMo got it for him, and if he says it's 100% now, after SA looked it over, I'd take that to the bank.