Tighter inspection
I would guess that you are being caught up in the general tightening of the rules by the CAA and propeller inspections are part of this.
I am guessing that you have a McCauley prop on your Cessna, these are subject to overhaul at six years or 2000 hrs. These times have over the past years been overlooked by a lot of smaller maintenance companys who used "engineers judgement" on such items.
Unfortunatly with pepole only too willing to rush to the legal action over the slightest thing so common sence has left the building and the CAA have no option but to tighten up on things that they had not been so hot on.