Problem w/4kcsq

[Whitson <whitson2.remove@gte.net>]

I recently bought an '86 4000 CS quattro.

I would like some help diagnosing a couple of things I don't
like.

	1.There is a hard pull to the left when the rear and
	  front differential is locked (but not when only
	  the front is).

	2.When neither is locked (normal position) there is
	  a shake in the wheel at speeds above 60 mph.
	  This isn't present with differentials (both) locked.
	  I recently read a post that this could be the drive
	  shaft not balanced. I haven't checked this out yet
	  but would like to know of anybody else's experience
	  in solving this dilemma.

Thanks for any and all help in this,
Dennis

**** To respond by E-MAIL, remove the " .remove " ****