red dragon (sorry don't know your actual name), you're probably right about it. i will be fitting a bigger TBE, and I have already fitted a Walbro (my stock pump died), but the fuel pump will not put any extra fuel in. that extra fuel will be returned to the tank.
I'm just not willing to risk it (it's one of those things 1in a 1000).
Depending on the bonus this year, might be Vipec time.

Adi