My friend Xiaobo has been developing for WordPress for the last 4 years — a truly master he is about the themes, plugins, and any customizations you may need about WordPress. He has helped hundreds of professional bloggers.
If you ever run into any problems or are simply in need of a developer like him who can help you make your blog better, be sure to bug him at any time:
RoamFox: http://www.roamfox.com/
Gmail: [email protected]
He does PSD to WordPress theme conversion and custom WordPress plugins development.
Make sure you mention you went over from Yang so that he would get you some nice discounts. 
Can he do Thesis Theme customization?