Hey Russ. Congrats on your games on the weekend! I believe your team won first ?
Yup, NofxKid and I figured that out, yesterday. If I hit the back of the valve with my palm, and then pump, it would cock every time. Taking the spring feed off revealed a threaded hole at the back of the body. It was easy after that. Theres a grub screw on the top of the body near the back that was missing. Presumably that locks the body and valve together so that they stay tight.
Thank you everyone for your help, especially Taminator2000 for the link to the disassembled marker, I appreciate your efforts.