| 180-200 sounds way too high--from what I've read, any sustained BG of more than 140 increases greatly your chances of developing neuropathy and other complications. If it takes insulin to get to safe levels, that's what it takes.
I have found Gretchen Becker's book, The First Year: Type 2 Diabetes: An Essential Guide for the Newly Diagnosed, to be very helpful.
Another possibility is that you don't do well with a high-carb diet. Do you test much after eating? You may find that even slow-acting carbs raise your blood sugar unacceptably high. (I am pre-diabetic, not on medication--my doctor prescribed a glucometer and told me to watch what I eat. I have found that too much of almost any carb will spike my BG above 140 in the first hour, and have adopted a very low carb diet.) | 
