Here's the thing about WT tables. If you've read all the classic treatises on arm, cart, and turntable relationships, you'll understand just how Firebaugh has been able to reduce these complex relationships into a relatively uncomplicated system that works better than most over-engineered tables.
The problem is only when, to paraphrase Einstein, you make a solution TOO simple. Here, with the centering of the golf ball, the directions are overly simplistic given how critical this setup parameter has proven to be IME.
Remember that setup tools have evolved over time for these tables. First Firebaugh had an alignment jig which was a one-point type. Then he dispensed with this, going with the headshell template instead. Now, I think there is enough of a user base and data points to argue that the next step is a jig for the golf ball. Except that the golf ball has been replaced with a metal cap in mkII arms, so this won't likely happen.
If there's a need, then sometimes it takes users to step up and fill it. I'm sure even WT dealers wouldn't begrudge a few tables that they dont need to set up. A jig easily and cheaply enough done and supports repeatability and consistency in setup, so why not?
