Transfer shifting is very stiff

Steel Soldiers is supported by:

Ajax MD

My transfer case is very difficult to shift in either direction. I can get it into neutral easy enough but getting it back into either gear is a real bear and I'd never be able to pull off a split-shift if my life depended on it.

I *think* the issue is mostly worn out shift linkage components. It's pretty sloppy. Should I try to bush these up or should I just replace the whole mess? What should I use for bushings? Some kind of nylon, or metal?