Hey Frankie
thanks for reassuring me
I see your points and appreciate them, but I don't mind losing the 2 lit on board gas BUT losing a lot of offboard gas really anoy me(mainly if deep yoyo profile), so maybe a possible solution will be to install a one way valve on the exit pipe of the inboard 1st stage dil, so like that even if the opv is stuck open I'll not loose my offboard dil gas ... food for thought
Jerome