RG Colorado failing to start when engine warm

Hi guys

Long story which goes back to when I bought the car new, it is an early 2013 RG Collie.

It has always had an intermittent starting fault, which over a long period of observation, only occurs when the engine is warm. The engine cranks as it normally would, seems to fire, but then dies instantly. No idling, no further cranking. I then have to try again and at times it has taken the third or fourth attempt before it gets going, sometimes it starts smooth, other times it knocks and rattles as it starts. The problem is that it is intermittent. Holden almost tried to ride out the warranty period by saying they couldn't replicate the fault until I made a fuss and since then they have replaced the EGR and the BCM with no success.

I have also since taken it to a injection specialist in Perth who checked codes and fuel pressures and couldn't replicate the fault and suggested that the dual mass flywheel in the clutch may be rattling and throwing out the cam sensor resulting in failing to start. This just sounded like they couldn't be bothered with it and wanted it out of their way.

I am now desperate for any suggestions people may have as to what may be causing the issue, or better yet, hear from a Collie owner who may have experienced similar. Any input would be appreciated.

Cheers
Steve