Thanks all. Good to hear this isn't too isolated an issue!

Looking up the tailpipe I can see the element glowing and flickers of flame etc but just not quite enough for it to start the start sequence.

I think I'll go with a combination of running the pump for 30mins (although it probably has this in flight time by now so the pump has been running for a while in flight) and then upping the uaccl1 voltage and running through the start sequence with the kerostart tube disconnected until I see a better flow of fuel.

Not having had to tweak values before as all my turbines have run fine from the box, can someone confirm the comment "You have to set the voltage in unaccel 1 before each attempt." - surely I set the value in the GSU/ECU and that's it for all future starts?

Rgds,
Mark