Here you go. Cable ties into the tank tubes. Ties threaded through bulkhead. Tank pushed from behind as ties keep the tubes lined up. I suppose you could use longer ties and start them through from the front and slip the hoses over the tips and then pull them back out.

Saves a bit of frustration. Also shown are my hemostats with a length of fuel line slipped over the tips to make them less apt to damage the "good" tube. I slit the length halfway across in the middle and slide the hemostat tips in. That way it stays hinged in the center and the parts over the jaws doesn't slip off like it might if it was two pieces.