Tracking error or ??

The easiest way to conceptualize the 4point bearing is as two knife edges (one for horizontal movement, one for vertical movement) with the center sections removed. Since there are only two points left as contacts at the extreme outsides of the knife-edge, any manufacturing unevenness between the mating surfaces doesn't matter.

And since the pre-loading (mating pressure) is only applied from one side, the loading can be increased without being overly concerned about cracking the bearing balls or thrust plates on the opposing side.

The result is a zero-clearance bearing, which similarly to a unipivot, doesn't have any loose or lightly-loaded components to make noise or resonate. But unlike a unipivot, since the horizontal motion and vertical motion are stabilized across the full width / length of the centerless knife-edges, there is no azimuth floppiness.

The 4points are clever designs that perform quite well.

@daveyf, it is reassuring to know that revisiting the anti-skating settings has brought the Kleos' tracking performance to where it should be.

Regarding the current-generation Well-Tempered tonearms, there is much to like about them. However, granularity of anti-skating and azimuth adjustments could stand some refinements (smile).

kind regards, jonathan carr

@jcarr  Thank you for your post. It was very informative. The Kleos does seem to work acceptably in the WTA 'Black' arm, although as you note, i would like to see a lot more accuracy and consistency in its adjustment capability. Nonetheless, the arm probably isn't the best for the Kleos, although selecting an arm that works better and works on my LP12 is the question. 

@mijostyn 

Well, I certainly trust MY ears and they tell me that The WT Table and arm sound very, very good. Other WT owners will tell you the same thing. What I don't trust is someone's "opinion" based on no actual experience, yet can pass judgement based solely on their supposed "expertise".  In my view, such opinions carry no weight whatsoever.

And as far as insinuating that the arm is a "bad piece of equipment"... you are just trolling (or showboating or both) and your pontifications do nothing at all to help @daveyf with his issue.

@grk  +1000

Experiment.
lower the arm/head shell weight to 1 gr. Then try other weights, and listen to the album. 
   Mine are recommended at 3+grams, nope, I play mine at about 1.75 up to 2 grams.  Sounds great to me.

    I used to use the Ortofon X5-MC- Great cartridge, low output.
one day I was wiping my TT, a piece of the cheesecloth, hooked the stylus, (PING) Cantilever gone, sent to Ortofon, said was my fault,…whatever, they gave me good credit for it, bought a nightclub II, and the Archiv (both Concorde) style.
never looked back.
amazing sound and reliability, …tracking is flawless with these.
recorded well over 300+ LPs’ using these 2 styli. Easy to swap, easy to set up for diff weight.

mess with the weight, til you find what works!

   Enjoy!