If were you I would look for the changes in the curriculum in CFAI web page or in internet. Portfolio management topic for 2016 L2 has changed dramatically.
We can’t rely anymore on past mocks for certain topics or readings, hence the best source is the CFAI web page candidate resources vignettes and EOC questions from the book.
If you really want to understand/cover the PM section now, probably best to just do the PM readings from the CFAI curriculum and attempt the EOC then do the tests on the CFAI Web page candidate resource page as Harrogath mentioned above.