Mounting of a tonearm.


I have an Oracle turntable with a rare Micro Seiki TA-1 tonearm. I don't have any dimensions or instructions for the installation of the tonearm.
How critical is the measurement from the spindle to the tonearm.?
How would i be able to determine the correct measurement ?

The tonearm sounds great the way it is installed but on some recordings i hear a little distortion on the last track and i am wondering if this dimension would have anything to do with it.
Thanks
Todd
tshulba
Dear all, I strongly recommend for all interested in tonearm geometry and its proper application the highly controversial thread "Prices of oldskool tonearms" here on Audiogon Analog. It goes into the very detail of the topic and illustrates, why absolute precise tonearm alignment is so important.
"Prices of oldskool tonearms" very good,
Now what was the last entrie?
Or is the yet some search facility?
Thanks,
Axel
Forums - Analog - page 2,3 or 4 . Last entry was about march 23rd I guess. You'll find it. Total answers about 158 or so.