Hi Derek, and a warm welcome to the forum. Going by the numbers i believe you have the carby with the pressed in brass jet which sits under the screen filter. They hava a tendency to fall out and hence run rich. When you pulled the mesh filter off it probably fell out and it's now gone to the abyss.
Read this thread, there are some pics of what i'm talking about.
[color:#FF0000][b]CLICK HERE[/b][/color]