Anyone confirm if this is a JH Reproducers or a Mayware?

Looking for tips on suitable cartridges too...

The original Mayware manual

Modifications Highly recomended by their author. I am not completely clear if these refer to Mayware or JH labs, but believe them to be for the Mayware - there is reference in the original notes to another Mayware arm - model number PL S4/D Mk 2. Can anyone clarify based on this info (and reference to a sliding cursor which my arm doesn't have)?

Pics of my own arm - believed to be a JH Labs version rather than a Mayware (the Thorens isn't mine, the arm is)

This arm is not yet in service, but I hope to get it going some time before vinyl becomes completely obsolete...

Close-up of Pivot assembly

Close-up Headshell assembly

(General pics...)

Mayware Picture 1

Mayware picture 2

Mayware picture 3

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