Well I took some quality time and read thru the owners manual several times. Thus armed with this new knowledge I proceeded to take my new AR apart for cleaning. Everything went well until it was time to remove the bolt head assy. the manual said to rotate the cam pin 1/4 turn and lift it out of the bolt carrier...It would turn but it would not come out...Long story short I cleaned it best as I could cleaned and oiled everything I could touch and see. I'm hoping the cam pin will loosen up after the first range session. Any suggestions???