The male connector at the top is larger than the one going out to the carb, I softened the hose in hot water and managed to get it one a few mm and clamped but i'm concerned it's not all the way on.

When looking at the fuel pumps online it seems some have connectors the same size and some have a larger one on top like mine.
Do you think it will be OK as is or should I get a larger hose?