the disc would'nt align itself strait away, after the spinning axis is moved the disc would move in a slightly advanced changing axis(gyroscopic force or reaction) eventualy coming back to perpendicular with the axis
in A the spokes would align the weights fairly quickly and in B the alignment would take a while longer because the leverage in B is much less (the arm from the axes)
if your tetering pencil was a true teater joint (no arm) and no friction in the pin then the disc would not have to align itself with the axes at all, only offset hinges provide a throwing effect (centripital) on the blade.
both a & b have offset hinges
take the bike and lift the front wheel of the ground, spin the wheel up.now turn the handle bars, the bike feels a rolling motion but is held by you. just as the rotorblades are feeling a slight gyroscopic proccesion but are held by you on the cyclic.