How do YOU find the hole?

Sean I'm not sure if this is what you're asking, but get an ink pad. Put the bottom of the base on the pad. Then stamp the image on the arm board, and use the image to locate the holes. I am assuming of course that you do not have the template for the arm.

If this is not what you are asking, just ignore me and chalk it up to youthful ignorance.

If you could post the arm part number then maybe someone has the spindle to arm pillar required dimension.

Sorry I'm so late to this thread. I had to go back and look up my Graham arm instructions from 1996. I recall reading about two positions. The Seagrave/Baerwald position optimizes performance near the outer edge and inner grooves. The Loefgren position optimizes in the mid grooves. (I couldn't find these on Google. Maybe the Graham site used to post a white paper that he would be willing to email?) Most people choose the former. The actual difference in position between the two is so small (1/8"?) that I personally wouldn't attempt any of this without a template. Good luck.

I was able to find the info that i needed on one arm, but not on the other ( so far ). Since it is an OEM Pioneer arm off of a vintage table, i don't know if i'll ever be able to find it. I do appreciate the responses and suggestions though. Sean
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You are welcome, Sean, and good luck on the other arm. Which Pioneer 'table is it? I may have one, providing it is a PL12D, and will simply measure the tonearm-to-pivot distance from the 'table itself.