Zipp 909 Hub Help

Hello, Slowtwitch. This is one is probably for the older folks. I am trying to change the bearings on my Zipp 650c 909 disc wheel. (I am 5’ 1” fully hydrated, so I holding onto my 650c wheels and Cervelo P5- Six 45 for as long as I can). I think the hub is a Zipp 282. Yes, it’s old. The axle spins in freehub. I believe there is only one end cap. What I am doing wrong? If the freehub is stuck, what can I do to free the body to change the cartridge bearings? Thank you in advance!