Right. Gotta get some real data there. I think 10" might be too close, and is elevating your numbers a bit, but even so, 2000 is too freakin high. Too bad you didn't get two sensors, so you could compare and contrast.

I'm a rotary /carb guy so I am NO expert here, but I would suspect a bad injector as well. Might want to either replace, or have them cleaned /tested. It's not something you want to screw up, as you've found out. Also, as mentioned above, timing will play a role as well.