Hi - I'm currently riding my road bike with what I believe is a 7 degree rise. I was diagnosed with diverticulitis and I have noticed some pain to my abdomen/intestine areas during road rides. Interestingly, this does not happen on my mountain bike and I believe this is because I am sitting more upward on the mountain bike than the road bike. I think I need to go to a stem with a greater rise and perhaps shorter than the 90mm I'm running now. Has anyone had any experience with getting their ride position more upward on a road bike? How much of a rise should I consider? Suggestions? I really enjoy the road bike and don't want to give it up. Feedback is appreciated!