Posted by John Cooper on December 01, 2002 at 20:45:55:
In Reply to: Clogged 20J posted by SHS Tubamaster on December 01, 2002 at 19:23:22:
I have not pulled the valves on a 20J, but I have seen in other valve instruments were the pistons were incorrectly intalled in the wrong location causing the ports to not line up. Sometimes this was done accidently, and sometimes on purpose. I don't know if this is possible on the Conn 20J.