Iwata Packing Screw and issue.
I have about ten Iwata Eclipse BCS guns. But they are the OLD style body. That means they have a small set screw behind the air intake valve, on the bottom of the gun (NOT the big screw on the top of a BCR). The second way to know it's the old body style is that the rocker is in TWO parts, not one. So behind the trigger you have a removable rocker (called the auxiliary lever) that goes in front of the Needle Chucking Guide. In a newer style, the Chucking Guide and the Rocker are attached.
SO for the few of you who know about this OLD style of the Eclipse. I got these on eBay for about $100 (for all ten). They work well, but not perfectly. I noticed that they are all missing their packing screw. Someone at Big Airbrush said the these guns are self sealing. Well ... I am not sure. The needle path from air in to out is really large. Bigger than the needle. And Costal lists the 1251 as the packing screw.
So ... what do we think. Are these guns packing less?
I have a lot of other airbrushes, 10 Vega 2000, two Harder and Steenbeck - which are my main guns. But for shows, I've used these Iwata Eclipses. They just seem to have some issue, and I think they are missing the packing screw (and packing). I am giving them a good soak in thinner because I can't get a new packing screw to fit in. They won't thread.
Thanks for any advice Eric.
P.S. once I find out the issue, do others want me to post my results?