Hi, I just unboxed and put together my new MDT XRS chassis for my Bergara b14 ridge. Stock fit perfectly, but for some reason my MDT made magazine that I have for my bergara b14 HMR will not fit. It seems the magazine well is way to small. I used force, and leverage. I googled it, and it's supposed to be a tight fit. What am I doing wrong? Any help or advice is appreciated greatly