Are there any variation in the Remington 700 action? I have two Remington 700 SA barreled actions; they may have different triggers. One would drop into a 2013 AICS chassis, and the other would not, it seemed it got hanged up by the trigger area (it's hard to see). They both would drop right into the same HS Precision police stock. I don't want to start grinding the AICS chassis unless I am 100% sure. Any idea?