Im new to this thread, and the long range game so give me a break when it comes to terminology. I just yesterday received my MDT tac 21 chassis for my Remington 700 5r gen 2 308. Everything was going well during install until i reached where the trigger needs to fit into the barreled action. It states you put the barreled action in the receiver to where the recoil lug is up to the housing, then back the barreled action about 1 inch out, put the selector safety switch into the housing (on safe) and the selector switch should stick out of the safety housing. Then back the barreled action to where the recoil lug is against the housing and the trigger should fall into place. Mine does not. It looks like there isn't enough clearance between the housing and the selector safety switch. It actually put a spur in the housing when i tried to fit it together. The barreled action will not fit into place when the trigger is in (it does with out the trigger) and meets hard resistance (from the selector safety switch on the housing). Can someone please point me in the correct direction.