I took my Henry 22 pump apart to replace the receiver cover and now can't figure out how to get it back together again. Considering there are only three parts it is frustrating but I have asked two other experienced gun guys to look at it and they couldn't figure it out either. The pumps are hard to find but I am guessing they probably work similar to the lever actions. Anyone have a Henry and know the secret??? There is nothing in the manual except an exploaded view of all the parts which does not help at all. HELP!