Hey guys, so I picked up a railed dust cover, and after I changed the springs and (what I think is the right thing to do) set the set screws on the top and back so the bolt carrier moves freely, I noticed the bolt carrier, when in battery, has about 2 mm of play, where it appears there is no spring tension 2 mm from full battery. I can move the bolt carrier forward and rearward freely with no effort at all. The hammer still fires in that amount of play, but I'm pretty sure that I never had this play before. Any thoughts? Would like to get this figured out.