The only danger in cramming in a ton of past perfects is that they all relate in time to the simple past, but not to each other. If your narrative involves a complex timeline, more specific wording might be necessary to establish it.
When I got home I realized I had left my jacket at work. It had been cold, and I had needed it. I had been wearing it at lunch. Chris had handed it to me. I had told him my wife had bought it for me. I left it at my desk.
There's nothing ungrammatical about this paragraph, but it's confusing. I might reasonably suppose that Chris handed me the jacket before I put it on to wear at lunch, and that my wife's purchase was the earliest of all these events. But did I leave it at my desk when I left to go home, or before Chris handed it to me? When did I "need it," at work or while driving home?
But note, these are not concerns about grammar but about organizing thoughts to communicate meaning clearly.
In your case, context and logic make some ordering clear, though there is some ambiguity, even for other reasons. "The authorities" "decided" "while." While meaning "at the same time as"—as what? the time that you "had diligently performed," or the time you "found yourself on the list"?