I just bought a Kahr P9, and when I field stripped it I noticed an excess amount of "gunk" in the barrel. The only way I can describe it is like hardened cement glue. I cleaned it w/ a nylon brush and solvent and took it out to break it in. 100% reliable and 100% accurate (from what I could tell) but upon cleaning it again, I notice the inside of the barrel has numerous tiny scratches along the rifling. I really love this gun, how will this affect performance/longevity? Should I contact Kahr for another barrel?