I just bought a used Fx Impact X Mk2 with a dual bottle attachment. I want to switch it back to one bottle, but I need the original stock bottle adapter (part A23 in the part manual), if anyone has one they would be willing to sell. I tried to use one of the ones from the dual bottle adapter, but the threads are a little too long, so it doesn't squeeze the O-ring and leaks air.
(Image for reference)