** Problem Solved **
Looking at my hardware setup I discovered that I had a switch allocated to each fuel tank cut off switch, both of these were set to off.
I quickly unmapped these switches and made a separate profile for the TBM, the plane is now running as expected, hurrah! Strange though how these switches only affected the right fuel tank and not the left, but all is well now.
I would just like to thank everyone who has been involved with the development of this plane as it is truly fantastic, it is the reason I wanted to purchase XP11. Thank you, I look forward to whatever the next project is.