I am returning to my project after having been off for a couple years. I recently discovered this small piece which looks to be a shim (.024"). It was more than likely meant to be discarded in favor of a better piece, but I can't remember installing this. Since it is marked with an "A", I can only assume there is also been a "B". Can anyone direct me to where I should look for this in the plans? Thanks in advance for your help.
