I have a CD Field FS 1911. I like it alot and it shoots very accurately. But I have noticed some wear on the slide stop notch. Is this normal? I don't see any wear on my Ruger P89 like this. If it's not normal would this be covered by warranty? What is the proper way to release the slide? Just press the slide stop and let it rip? Or hold back the slide while pressing the slide stop? Thanks for any advice anyone might have.