Have you tried taking a dial indicator on a magnetic base to it? Check for runout on rotation and against the face too. Also try it with your Barracuda as a reference. Might as well check your spindle runout while you're at it as well.
My cheapo Grizzly set has saved my bacon when sorting out problems on my woodworking machinery. http://grizzly.com/products/Magnetic...-Special/G9849
Have you tried the wobbly chuck again on your old lathe just to double check? Maybe try spinning it up with no jaws installed, just to check it out.
Last edited by Dan Gonzales; 04-17-2009 at 04:11 PM.
Whittier, CA, USA
Dona nobis pacem