Getting the area where it meets the metal and where it fastens (like the plastic holes) is a royal pain. I am using a jig saw, files, and sand paper.
The Model 1 uses a metal plate with a threaded hole, stock secures via long bolt very securely. I'm not certain of the 2200W uses the same as the Model 1 securing method; the scematic shows the same as the plastic (?). I would think it is the same.
"Well, I thought it was a rabbit but it turned out to be Bear Grylls in a rabbit hide."