Hey Ken,
Yep. I guess the main bad thing with the former diesels were the control boxes for them. There was a particular 'event' on take-offs with weather data being read, engines at max, taking off, that caused something to happen and the engines would shut down or go to idle. It was a very difficult bug in the software or firmware (from what I remember reading) that caused this. They have now since gone to Auster or Austir (however its spelled) and its looking like a very sweet, dependable powerplant. The line of engines have already been dispersed through the various airframe ranges and also some companies in the world are offering Auster switch-outs.
They are on top of things. Pretty slick company.
Bill