I actually think that each human being has a tolerance level in all things and as long as that is within acceptable (non flawed) levels then your body will do all it can to keep it at that level. Trying to force it to be something that it's not is asking for nothing but stress. Don't get me wrong, I make every effort to keep my levels within an acceptable (for me) range which is between 4 & 7 when fasting, and an hb1ac of around 6 or less. Now I know I could force my levels lower by using more insulin or eating even lower carbs but having experimented with this in the early days, I realised no matter WHAT variable I tweaked, my levels ALWAYS returned to between 5 and 6. It was as if they were saying forget being in the 4s, it's not for you and insisted on releasing glucose when it fell into the 4s (with a LOT of effort and angst). It's like anything, blood pressure?, on the cusp of high but healthy in every other way, cholesterol?, higher than the so called average but ratios perfect. Your hb1ac of 30?, why do you think that is somehow a bad thing? x