Here's my number one tip for problem-solving: track your data.
That's actually what led me to the Primal Blueprint. I was having several problems (one immediate one was painful acid reflux). I started logging everything I ate, how I felt, how I slept, exercise, water consumption, and whatever else seemed potentially useful. It took very little time for me to find that simple carbs were the culprit. From there I was able to narrow it down to grains and *eliminated* the acid reflux issues in 2 weeks.
So... track your data. It's the best way I know to pinpoint what it is that's giving you trouble. You may be very surprised by what you find. For example, I found out that what I thought was a hangover from a social gathering was not the drinks but the simple carbs/grains that went with it: bread, chips, and other junk food. NEVER would I have found that without writing it all down.
Life is short: Void the warranty.