How sweet! Joey didn't want anything to do with scritches at first either. One day he started allowing only the top of his head scratched through the bars of the cage. Then after a while he offered me a cheek and the back of his head, but ONLY through the bars. One day he finally decided to allow the top of his head only, when he was out of his cage. After a few days of that, he became a total scritch junkie.
It really is such a joy when you make the breakthrough, and the trust is there.