<VV> Radial movement...

[Secular]

    "...While annoying idle speed fluctuations can be 
    traced to worn throttle linkage parts it's just as 
    likely to be a small spring inside your distributor. 
    Move the shaft in a radial or sideways direction 
    to see if there's any movement. 

    Very small amounts are OK but it should not move 
    at all or a loss of dwell angle is likely at higher RPMs 
    along with a resulting timing advance loss...."
    From:  http://slbarn.mbz.org/articles/
  -----

  Here's my question:

  I moved the distributor shaft side to side, it appears tight. 
  However there is radial "in and out" movement (less than 
  1/4") . Is that abnormal?

  Regards,


  Tony