Stock Pump To Q-Jet Fuel Line Replacement ?

[Cw72gmc]

Hi guys, I've been trying to tune my carb, and realized that I've been leaking at the pump outlet for quite some time. I think I over tightened the line when I replaced the pump. I cant seem to find what size the connectors are, and I cant find many solutions at local part stores, even went to the jy today and couldnt find a line everyone had been pulled already! What would you suggest? I know rubber is a fire hazard so i'm going to stay away from that route. How tight should I tighten the line at the pump and carb?

Thanks so much

Happy T-day weekend