digestive trac

How are you folks with post op digestion, I am 21 months post op and so oftin have diarea after eating. I try to pin down what it is but so many things seem to give me trouble, mostly breakfast stuff, excluding oatmeal and bananas. This is my last issue to over come. I expected it for maybe six months after RC, but sure hoped by now it would improve more, Of coarse it is better than the first six months. By the way I have a neo bladder and it is working great. Thanks in advance for any help. Don