Having followed the for and against re CASA's "draft" order in relation to Jab engines, it might be worth reading the article and watching the inflight video that eventually saw a Kununurra Tourist operator grounded.
http://www.theage.com.au/victoria/the-law-of-the-bungles-grounds-unruly-alligator-20120608-201bm.html
It was also safety concerns that has seen Tiger airways, Av8 in Darwin and a Cairns charter operator all recently grounded and except for Tiger eventually wound up. In the case of Alligator the owner was the chief engineer. They had at least three emergency landings due IO540 fuel pump issues at an aerodrome I was managing.
I have owned both a J200 and a J160 over the years and both aircraft had "top overhauls" at between 100-150 hours time from new costing thousands. The airframes are great in my opinion.