Defining radius of circle that encircles text

[Sam Bivens]

Happy New Year to everyone reading!

Please see the attached MWE; how can I specify the radius of the circled 
text? Using `\circle 2` results in differently sized circles based on 
the circled text, but when I specify the radius with `\draw-circle`, I 
somehow can't manage to center the text inside the circle. This has to 
be a very simple fix that's right under my nose, but somehow nothing 
I've tried works.

Or, perhaps there's another option that someone might share; that would 
work, as well.

Thanks!

Sam

mwe.ly
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