all clear - will try restricting fuel back to tank

Hi all, finally got it out today after restricting the return line to the tank with a zip tie. It is slightly better now dies after sustained throttle but if you back off it keeps running and then I'm assuming float bowl refills takes off again. Should it be the return line that needs restricting or...

It doesn't stall, it just runs out of gas if its been given a decent handful for a while or mway speed. You can ride it around at low speed under 100km/h without issue but once its up in the revs the float bowl seems to run out of gas but will restart after the pumps run a min or 2

In welly

Cheers Mc Tool

Like its run out of gas, restarts soon after. Fuel filter tank vacuum lines all clear and clean and new pump. It is missing the proper Y connector with the jet to regulate fuel back to tank. Where can I get one from or can anyone recommend an alternative solution?