leaking 205

[blazomatic]

I don't know if I can explain this well but here goes. I got a 71 K5. The output yoke on the t-case is leaking. The one that drives the rear wheels. It's also loose. You can wiggle the yoke back and forth. It has a 1/2" gap between the dust cover(behind yoke) and the aluminum cover bolted to T-case. The large nut holding the yoke on is tight. I know the seal is bad. And the 1/2" gap is where mud and stuff got in to make it go bad. Anybody have any suggestions? Know what would cause a gap but the yoke nut to still be tight? Is it possible someone put the wrong bearing or seal in it? I wished I had a pic. I know it would help. How hard is a 205 to work on? Thanks in advance for any help/replys.