I am trying to put a 20 gauge 870 and am not able to get the forend, bolt, and carrier reinstalled. I cannot get the shell latches pushed in at the right time to get the action bars in if the bolt and carrier are riding on the action bars. If I do it without the bolt and carrier, the action bars go right in. Any clues as to a secret way to hold my tongue that I might be missing. The carrier and bolt always seem to get elevated too high off of the action bars.