Nope.
Generally, if you have less than $400 of SE income you don't have to pay any SE tax. So, at $399.99 of SE income, the SE tax is zero. At $400.00, the tax will be $400 * 92.35% * 15.3%, which is $56.52.
So I take it you’re not going to answer my simple question in Post #74?
Thanks for pointing that out.