Cobra Trailer - U.S. Axle?

I would like to hear from some people who have put an American axle
underneath their Cobra trailers. I have a early 80's Cobra, and a
wheel-hub with a chip in it that will no longer hold the grease seal
properly. I am thinking of simply switching to a U.S. undercarriage,
and would like to know if anyone has done this. If so, how much did
it cost, and are you happy with it?

Also, I have heard rumors about a "Junkyard" of sorts out in
California somewhere that buys the trailers from wrecked gliders from
the insurance companies. Has anyone else heard of this?


-EX