Posted by Floyd on February 06, 2001 at 23:21:01:
In Reply to: Piston valve problems posted by Bill Jagnow on February 03, 2001 at 20:39:37:
I have the same problem with my PT4p, I use a drop of 3-in-1 oil mixed with lots of cheap, petrolium valve oil.
Be sure to clean the valves and casings first.
Floyd The Blind