Threw a new locking piece in my g3 bolt group and to my surprise the bolt gap jumped quite a bit. my old LP was measuring below .010 the gauge was tight. New LP and the .015 fits but snug so i am guessing .014 since my cheap gauges jump from .013-0.15. when hkiller welded her up for me the gap was .017 and dropped to less than .010 with about 300 round through her. is this normal? or should i be concerned? all parts in the kit were matching numbers, 079 in the bolt head, lp, carrier, etc.