Very old crappy GPA - addendum or put in PS? Forum

[ScottRiqui]

I'll be applying twenty years after getting my bachelor's. I think my LSAC-calculated UGPA will be around 2.62. It was a challenging engineering degree, but that's still no excuse. I carried a 3.85 in my Physics Master's (degree awarded in 2009), so fortunately there will be some evidence of more-recent high academic performance, but I don't know how to address my UPGA to the adcomms, if at all.

I don't have anything that would explain away my UGPA, so I don't know if it warrants an addendum. Also, I think I can adequately address it with a paragraph or two in my personal statement.

So which avenue would be appropriate in a case like this?

[Adjudicator]

The conventional wisdom is to focus on positive things in your PS and leave things like this for an addendum.

[ScottRiqui]

Thanks. Along the same lines, there are any number of LSAT prep books/courses/materials, but are there any highly-regarded books on writing personal statements, addenda, and things like that?