He definitely knows how to build a wheel and treats it like his own wheel. He found out that my internal gear initially wasn't installed properly that causes the untrue. He ordered the part from the manufacture and fixed it for a very reasonable price. I'm glad that I sent my wheel to Prowheelbuilder and didn't go to the local shop who thinks he knows how to build a wheel. (even though spent time on shipping back and forth, I believe that I saved time because I didn't waste my time to find right wheel builder). Also this website is very clear and I love that to knowing what I'm paying for before I decided to build a wheel. Thanks I'm very enjoying my new wheel!