How to adjust height of Eminent Technology ET-2 tonearm

Ideally, (that screw) should be in the center of it’s range (up,/down) when the optimum adjustment is achieved. This is key.

Referring to the link above, the 'VTA block' is equal to the "arc block". 

If you loosen that screw, and adjust the mechanism to fall in the center of it’s range.......how does your cartridge look?

This will be our starting to point

As this point, you need to have you cartridge fairly level. If it isn't,, think about all of the adjustment features previously.

Let me know.

Dave - if you really want to try out that cartridge it is a very easy fix.

It's a SOTA Star Sapphire vacuum

I believe you have a wood plinth. This means they installed the ET2 with the aluminum sub plate so that the three ET 2 leveling spikes don't mark up the finish.

Remove the ET2 from its base in whole without the cart installed. Take the aluminum sub plate to any Metal Shop (when the quarantine is over). They will cut you a thicker aluminum piece, and drill the mounting hole to match. Then you have the opportunity to set up the ET2 properly.

Any adjustments made with the current install which is at its height limits will be sub - standard, as the tonearm was not installed optimally to begin with. 

I'm going to bow out in order to make the process easier. Listening to one person is better. Good Luck!

I've set up the ET2 on various Sofa turntables dozens of times when I was the importer here in New Zealand ( for both products ).
I've always been able to set up with the ET2 mounted directly on the Sota armboard without any spacer required other than the aluminium plate provided by ET.Sounds like you simply need to move the arc block up the post as per @ct0517 suggestion above. Have a look at the drawing he provided.

See the Bolt in the smaller Blue Circle. 

https://photos.app.goo.gl/hGcy2jPkRL7BYD7z7

It is important to try to keep the air bearing midpoint (inscribed line on casing) level with the record. 

As he also stated the purpose of the 3 holes for mounting the armtube is to get the centre of the bearing ( bearing spindle ) in line with the surface of the record. Then you position the arc block on the post, ideally with the VTA adjuster in the middle if possible which then gives you maximum up and down adjustability.