Hi Oli, I was flying anurags UB when she flamed out. All the 3 tanks are sealed and no leaks found. I know it's proven, but I still doubt the 8mm tygon which is used all over, it seems soft since its new and I feel could collapse when the oly is at full thrust, thus drawing fuel from the accumulator momentarily. I personally still prefer the stiff PU tubing. I could be wrong of course.

Chatty.