I agree with Dan_ed and Onhwy61. I too can play 99% of my LPs with no IGD. Unless there's a great deal of wear on the disc, all is well. Of course, alignment is only absolutely correct at the two null points (given Loefgren or Baerwald) - every other place across the traced path of a pivoted tonearm has some degree of error. Ironically, the grossest tracking error occurs not at the end of the LP side, but at the beginning.
-Richard
-Richard