Side Stitch solutions?!

Pretty much a regular sufferer here. I've gotten to the point where I very rarely get them during training anymore, but have had debilitating ones in the last two races. At Haines city the weekend after last, I had a great race going, paced the swim and bike well, was off to a good 1st half of the run, and then bam, started with the side stitches, eventually they got bad on both sides and I started wheezing like I couldn't get a breath in, had to shut it down and run/walk for the last 5 miles and they still never really went away until after the race was over. Nutrition appeared to be good, no cramping anywhere else and HR was staying reasonably under control.

Has anyone been a chronic sufferer like me and overcame it?!