I'm trying to identify the part # on the bottom left side of the receiver of my 336A above the lever. The schematic only shows the right side of the receiver. Part 61 is a peep site dummy screw and shows two are required but there is only one hole in the receiver. Also, there are no threads in the hole.
The screw needed for the Marlin 336A is the trigger plate support screw. We are currently out of stock on this screw, but reproductions are on order. See link below.