If your blood numbers look good and suggest that you're insulin sensitive, I can't see how eating higher carb will hurt you. In fact, one of the principles of the Primal Blueprint is to listen to your body, and your body clearly seems to be sending you the message that it needs more carbohydrate. Try eating higher carbohydrate and see how it does for you. Just try and make your carbohydrate from good sources: white potatoes, sweet potatoes, white rice, bananas, squashes, etc. Also, try not to combine high fat with high carb. If you're eating potatoes, stick to things like chicken breast, lean beef like london broil, trimmed pork loin, etc. See how it works for you. The only way you'll know if it works for you is to try it.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.