Sounds like you are pretty well convinced but if you ever find yourself needing a little more convincing, try putting that food back in your diet. If your symptoms return, and then go away when you take the food out again, that's pretty solid evidence that you don't want that food around.
For me it was sugar. When I eliminated sugar from my diet, several symptoms (hormone related) got better and after 3 months were nearly eradicated. When I went back on sugar, after a couple months they were back in full force. Eliminate sugar again, the symptoms go away.
My problem is I can't seem to stay away from sugar. I just don't have the will power.
2009 Trek 7.2FX WSD, brooks Champion Flyer S, commuter bike