I did the super cleaning/polishing thing too and my patterns suffered dramatically. Go out and dirty it up..I mean 10- 15 rounds back to back. Leave the alcohol out. If ya just have to clean any, then bore snake it once, but try it real dirty and then try it. If us have some less loads or other loads, try them first. I did this and mine came back up. I think its something we are doing in the cleaning process. Not sure, but please let us know