What symptoms do you get from the sulfites? My microbiologist friend told me to be careful of wines with sulfite preservatives because they kill off the beneficial microbes in your gut. I noticed that some wines give me insomnia, don't know if it was a sulfite issue. I can't drink much any more anyway because of health issues. I used to buy 20 gallons of fresh grape juice at harvest time and ferment it myself in 5GL glass carboys. I'm surrounded by grape farms.
Walker's would fill up my carboys in the back of my truck with a hose. They also ship 5GL buckets of juice, pasteurized so it doesn't start to ferment 'til you open it.