OK Gentlemen, what did I do wrong? My DPMS LR-308 (16" carbine length) was running good just not accurate enough at long range. Bought a new Anderson 20" barrel on the cheap to try out, changed from carbine length to rifle length gas tube but used the original gas block. Tried it out today and never got a complete cycle. I ran two different factory loads and two different handloads, no joy. Slopped it with oil, checked the BCG, everything looked and felt good. I thought maybe the gas port was to