I chose to purchase my cams from him because he is well respected in our community and has been in business quite a while. I've been working through a purchase with him and his communication has been very good and he has been quite helpful.
I'm sure there is some sort of misunderstanding, or a delay with overseas shipping, or that he is simply very busy. My advice would be to keep trying him.
All my correspondence with him has been through
john@drcamshafts.com