Okay...I’m not an absolute moron re rifles, but what do you mean, “...Pay close attention to the tightness of the gas cylinder retaining screw...”?
Can you be more specific for me?
Chasaway
There's a book titled The M1 Garand: OWNER'S GUIDE that has just about everything you want to know about the Garand from an operational and maintainance standpoint. It's available from Fulton Armory (www.fulton-armory.com) and very much worth having for anyone who owns an M1. Fulton Armory specializes in parts & accessories for M1 Garands and Carbines. There are a few others outfits as well.