I screwed in the barrel on my maverick, and it threaded in fine. But when I went to unscrew the barrel for cleaning. IT WOULD NOT BUDGE. I am turning it counterclockwise, which I think is what is said to do in manual. I have tried putting it in vice grips and trying to move with pipe wrench. I don't want to go overkill because the barrel and gun have aluminum threads which can rip out if forced to much. Does anyone have a suggestion? Any will be appreciated.