Yes - thanks so much! Sorry for the repeat post!
Glad it helped. No apologies needed - it can be difficult to search the forum productively.
One search trick that sometimes works: take the subject title you have in mind and put that into Google (or other) followed by site:forum.mrmoneymustache.com.
For example, try searching for
Return on paying down mortgage for PMI site:forum.mrmoneymustache.com