It's leaking from the bottom of the tank. I only put on about 3 litres which is now emptying itself into the street as I left it abandoned.
Ive used some fuel line I had to connect the return pipe back up which doesn't leak as I couldn't push it back onto the barbs once I'd cut it. I'm guessing it's heated and sealed onto the barbs from factory. I've got other fuel line upstairs but it's just that braided crap that's used for the leak off pipes. I don't have enough I don't think plus it would mean cutting the pipes again and the last thing I can afford is fuel pick up and return pipes as well, on top of whatever else ill have to buy.
All I need to do is get the bloody tank off and it'll be easy enough to bolt in the new tank. Job done. If only I could get an angle grinder in at those bolts or something.