Here is a testimonial as another satisfied customer of Doc's.
I have one of his single reed calls with the "non-stick" tone board and it is truly just that...the real deal when it comes to a call that does not stick.
Even though I try to put as little spit into a call when blowing, I have encountered some calls that are more prone to sticking than others...but Doc's new tone board just keeps on chugging along with no sticking issues.
Now I have a bunch of calls (RNT, Echo, Betts, Addiction, Kwakman, DLC, J.J. Lares, Grover Knoll, Alvin Taylor, and Ron Gaston) and believe me, Doc Hull's calls can run with the best of them.
I have also found him to be a fair and honest gentlemen in my dealings with him and I would not hesitate in the least to do business with him again.
The suggestion for Doc to send out "free-calls" speaks volumes about the suggester IMHO...that is all.