Jon--Give it one more shot with the high needle below 2 turns. If the high needle is set too high it will load up the lower mid range for some reason on that engine. That is why the 110 can be a little tricky. If you are too rich it acts strange, but it doesn't take that much to go past the "just right point" to the oops to lean point.

Albatross-- Drastic changes in atmospheric conditions will have an impact on needle setting, especially if you were on the edge of lean or rich.