Glad you found it, and hopefully before you'd gone too far down the expensive "Change it all bit by bit" route
It would have been a major pisser if you'd finally found it was that 4p's worth of hose after changing everything else
)
Eggzakkerly what I did when I was on my quest to try and solve a very similar problem.
Be careful though- I found that the petrol-submersible grade longer pipe I installed ballooned out like something you see in a heart bypass procedure........It didn't split, but it caused confusing and very hard to trace erratic problems of its own.
Mike's right, it obviously does have to be petrol-submersible, but it also has to be rated for higher pressure than normal carb pipe.
It is available though, by the meter (or units smaller than) at a LOT less than the OEM pipe, but there's a fair chance that the 'spare bit of pipe you had kicking around the garage' won't be up to spec for both pressure AND submersability (oooooh I think I just invented a new word!
Mine did the same thing. Very hard to see but very obvious once dissected. I had a total power loss. I bet there are many Oilhead in-tank hoses ready to fail.
Don't disconnect the return QD while the fuel pump is running! It's a great way to blow off or blow open a line in the tank. The pressure can easily reach 2X.
