I have a problem and I could use some advice. I recently purchased a 4500 PSI Hand Pump from Ebay to use with my new Weihrauch HW100 KT. The fill probe for the rifle has 1/8 inch male thread and it will not connect to the 8 mm female quick connector that came with the air pump . I've been to several stores and have been unable to find a compressed air fitting that can connect the two. Can anyone inform me of the correct name for the fitting that I need, and where I can get one? Thank you very much. I really appreciate any help you can provide.