I've been following a gluten-free diet on top of Heather's EFI diet for about a month. This change completely got rid of bloating, gas, pain and cramps. Urgency has been greatly reduced as well. I have cut down on Imodium, only using it now when I have D and have to do a presentation or take a test or something that I can't easily get to a washroom. Mostly I have D due to stress or eating too much in one sitting.
I have had bloodwork done for celiac that came back negative. I had allergy testing that showed no allergy to wheat or other gluten-containing grains. However in the process of constantly trying to make myself feel better this was one option I decided to try. It has been the best change in my symptoms since I removed dairy from my diet.
I do not rely solely on rice for my SF base. I eat plenty of quinoa, buckwheat noodles, amaranth puffs, potato, sweet potato, squashes, beets, zucchini, carrots, etc...