Recently completed a 6.5 Creedmore on AERO matched upper and lower set. AERO BCG. Runs great but the bolt extends beyond the rear of the mag when it is on the bolt stop.. Is this common? If i try to insert a loaded mag and hit the bolt release the carrier runs over the rounds and either fails to feed or malfs... Runs fine if i pull the charging handle all the way back but i would prefer to just slap the bolt catch to charge... Ideas? Seems like my old DPMS worked just like my ar15s..