Hatsan New Jet 1 fill problem!

I also have a Jet, in my case the Jet2. I did not have a problem with their fill adapter although I don’t really like it. A standard foster will not fit on my gun. I think their manufacturing tolerances are bad. The hatsan Velox I bought also had a fill adapter that didn’t work on the gun it was sent with, neither did a standard foster work, luckily for me I had another hatsan nipple that I replaced it with and that fit my foster compressor fitting. The Velox has proven to be an otherwise great gun for the money.