Fuel Filler will not Fill. Boyd's Rear Fuel Cell. Need Advice plz

[K10Dream69]

I'm still messing around with the restoration of her but I decided to take her out for a spin. Trying to get more motivation to finish her.

I wanted to try out my fuel filler that I designed for my Boyd's Fuel Cell (Side Fill)

I bought a vented gas cap too.
The gas pump immediately clicks and won't fill at all.
It's really frustrating cause I have a lot of time involved with this!!
I'm not sure what the problem is so I'm hoping someone has an idea??

I'm assuming it's the angle of the hose - I didn't want to cut a bigger hole in the bed

Any input is appreciated
Here's a couple pictures of the setup.