I believe his passing was posted here shortly after hi obit appeared. Very sad - he was a great guy, and delivered great products and service.
Paul Grzybek Tube Audio Design Passing
Today I tried sending Paul an email today. The returned response was we are saddened that Paul can not get in contact with you. I did a internet search and found he passed away back in May. He had done some work for me on a Fisher 400 and I also purchased one of his Hot rodded 400's. He will be missed.
He was only 48
He was only 48