Greetings,
I have never talked with Mr. Cunningham via telephone. I did buy two 5/8" powder housings from him. I just sent a check to his address with my parts request. A few weeks later, I received my parts with a note to send more money as I was working from an outdated parts list.
I took a chance that my money would be received and my parts sent to me. Mr. Cunningham did not let me down.
Cheers,
Dave