I also mentioned I didn’t know how you were trying to use them. Using the PSR is a little different than using those terms to set up a thematic argument.
I’m not deeply versed in the theory behind the PSR. I use the Armando Saldana-Mora method (found in Dramatica for Screenwriters) to deal with the PSR. If you haven’t read that book, read it. It’s super helpful. The gist, though, is to ask what Appraisal and Reappraisal have to do with Obtaining.
Maybe in your story they spend time dealing with an investigation of whatever type. Then they appraise the evidence to come to a conclusion about the killer, who he is, or where he’s at or something. Then maybe they realize they need to reappraise the evidence they’ve collected, or maybe they need to reappraise their profile of a suspect, or reappraise the person that is feeding them info. Maybe the good guys have appraised that the killer is so bad and so smart that they need to reappraise their life choices. Then there would be some exploration of Doubt as it relates to Obtaining. So they can appraise something and reconsider it, or appraise something and reappraise something else.