This may be a crazy question, and maybe you can answer this for us Bruce .
Was Zephyr actually sending warranty units back to China for repair? Then sending repaired units back to the USA?
You know more about what was going on than anybody else here. And don't seem to be denying that this may have been the case. Seems like a lot of shipping costs and shipping time and a lot of time to clear customs both directions to get a minor repair made.
The scenario of a dirty Ion being the reason sounded far fetched, but . . .
And if they weren't shipping used Ions, then you (Bruce, our only contact) could remove this as a possible scenario. Not that it's important, but now it's like a crime scene, curious minds
want to know some details. How many bullets? How many shooters? How much
money?