Well, after a couple of weeks of thinking I had finally found a combination that was working between diet, acacia fiber, a half teaspoon of Miralax, and one stool softener, it appears I have to stop the Miralax. It is causing very severe rectal burning and a searing pain in my back over my right kidney. At first I thought it was just back pain, but clearly it is related to the Miralax. The rectal burning from the Miralax seems to have led to a retear of two of my fissures, even though stools were soft and easy to pass while on it.
so the search continues... Just wanted to share this in case anyone else ever has any odd reactions to Miralax.