More axle discussion

Hey all, still looking for a fix and I'm most likely making this more complicated than it needs to be.

I while back I posted about my 95 LS auto 167K giving a shake/shimmy when at certain speeds. See http://tinyurl.com/bl28n

Definitely drive train related since I had the FWD fuse in, front jacked up with wheels off and still had the shimmy at 35-40mph on the speedo. So by this I've eliminated all wheel/tires issues. I mentioned here that both of my drive axles have lateral play in them, which most would agree isn't correct. Looking in the Haynes manual I notice each axle has an inner baffle plate about the same width as the movement my axles have. Is it possilbe to replace an axle without this baffle plate and this is causes the shimmy? Do these baffle plates usually come with reman'd non-subie axles? Can these baffles wear down to cause the movement? I guess I'm just avoiding having to justify replacement of axles that are 1-2 years old.

Any thoughts?, this sube is not longer fun to drive like this.

John