In case a search comes up for this. I pulled the jet out last night from a carb running fairly rich and it was a 107. I ordered a 105 and 104 size for testing/replacement. The engine was running REALLY rich, so I went for the 2-3 size down, not just the 1-2 that was sort of originally suggested. I have an o2 sensor and will try to dial it in. I also will not be messing with the metering rod.
-Nate