Barrier to raw

Well guys.. I have been doing so well on my transition to raw, but one thing keeps slipping me up-- I crave pasta and starches like cooked white potatoes. Has anyone else dealt with this problem? It is not just a preference, it is a CRAVING. It will drive me nuts. Today I had a banana for breakfast/lunch, then when I got home I had some raw almond butter spread on an apple, and half an orange. I wasn't even that hungry after I had all that fruit and almond butter, but it just kept sticking in my mind that I HAD TO have some pasta. I have to give myself credit though.. initially when I got home, I had taken a package of instant macaroni out of the cabinet-- but I made myself stop and eat the fruit instead, hoping it would be enough. Apparently it isn't..after waiting an hour and a half to see if the urge would go away, I finally ran to the cupboards and made a bowl of pasta, and sadly had some potato chips to go with it. I waited so long! I have always read that if you put a craving off long enough it loses power. Guess not..
I think the fact that I am able to go long periods without eating much is actually working against me. I go all day not being that hungry, just eating a couple bananas. Then when I get off work I feel like I should eat tons of food and am ravenous for refined carbs! I am so frutrated because this seems to be my LAST stumbling block. I have completely eliminated candy, chocolate, cookies, and any sort of overly sweet junk from my diet. The ONLY thing left that I have cravings for is basically pasta and potatoes. I have tried to compromise by buying sweet potatoes, and baking them and using a little ketchup on them. I know sweet potatoes are better for me than white, but I really don't like the feeling of lost control that any cravings cause. Any advice? By the way, I have a very slow metabolism and can survive on virtually nothing (maybe half a sandwich every other day) without losing weight. I have done it many times. Ugh.. I guess if there's a famine I'll be the fattest person left on the block..
-S