My goal is to make the transaction a non-taxable event by conversion to lawful money in U.S. Notes or other.

I am somewhat confused by your answer.

"Prior to the simple Demand we used the verbiage about non-negotiable or non-redeemable."

The example endorsement in your image used "non-negotiable" verbiage. What simple Demand verbiage are you using now?

Where "True Name" and "Legal Name" appear in the example image, are these written cursively as a signature or are these printed as block letters?

What is the difference between a "True Name" and a "Legal Name"? If the check I am depositing is made out to me personally instead of a business of mine are these the same?