Well, I have major gas, too, but not from Fiber One. Bananas, broccoli, stuff like that. Sometimes nothing at all triggers it.
I have no cure for you. I just fart a lot! If you figure something out that works, let me know.
DISCLAIMER: I expect to lose this weight over the next 6 months to 5 years. I'm not going to feel like a failure if it takes an entire month to lose 1 pound. I'm going to feel like a success when that happens! I may offer advice that I'm currently not taking myself. Feel free to call me on that!