Just to throw something out there..
I am glad you're not having side effects. about a month ago I was looking for something to speed gastric emptying and found Triphala which is an ayurvedic concoction. There is real research that, in rats anyways, it increased emptying better than.. if I'm remembering right, reglan or another of the most popular motility agents.
I had never been diagnosed with any motility issue and just to get off all pills, I stopped taking it, but didn't notice any funny side effects. Anyways, that's just in case you wanted to try something with other health benefits if you find that increasing motility is helping you.
Are you still on the baclofen?