Well, after baking the Sherwood piston, model 3601-10, in the glass top cooktop red hot for 45 minutes, ultrasonic cleaning with hot water or vinegar for hours, dishwasher soap combination, degreasers, steel brushing it, boiling it in the microwave oven, also I ground a penny coin to fit inside the scuba tank joke style valve, drilled a small hole 1/16” and clamp the piston to it, so I could blow 3,500# of air thru the air bleed filter hole and that only improved just a little bit. However, yesterday, I put the piston stem inside a long small 1/4” socket, grabbed with locking pliers locked in place, and used a 2,500# pressure cleaner, using the stream fitting, cleaned both sides for over a minute each side, and it worked! . Now is streaming about 60cc/ minute. It was originally contaminated with lubrication from my hands, while placing the orings. The filter was completely clogged after that.
