Glad I could help out. I also found out recently that eating a handful of nuts at various times throughout the day has helped also. I eat cashews and almonds but I imagine other nuts will work. I find that supplementing the calcium with the nuts has returned me to completely normal bowel function.
What amazes me about this problem is that I have found no doctors or surgeons that have any recommendation other than to eat bran. Which I did but it didn't phase the diarreah. Anyway glad the calcium worked. Give the nuts a try also for a change.