Hi all so I was cleaning my new ar this morning . So when it can time to reasemble everything im watching all these vids where they guy just pops everything back in lickity split with no trouble. When I attempt to put the fireing pin retaining pin back in it doesent wanna go through all the way. It goes in the first hole but not the second. Should I squeese the end of the carter pin with some plyers to close the gap in the end as that what seems to be stoping it ? Help please!!!