Is anyone finding good info on natural ways to help autism in our children?

Yes. I am and so are other physicians i know. I have had good experiences with chinese medicine, homeopathy, gluten free/casein free diet, supplements and of course therapies. I have had patients experience significant improvement. I actually have two patients (who were high functioning to begin with) have their diagnosis of autism removed. While that is unusual, it shows it can happen.
Unfortunately, NO. "natural" ways implies non-pharmacological, non-educational/behavioral interventions. There are no proven dietary, vitamin, bariatric or other interventions that have been shown effective in treating pdd. See www.Nimh.Nih.Gov/health/publications/autism/treatment-options.Shtml.
Much research. There is a great deal of research going on, looking into treatments for children with autism, including natural dietary approaches. Still no definite positive results.