AEA HP SS Plus leaking

I got a new AEA HP SS Plus from Utah Airguns yesterday and it is leaking air from the fill port. I called and emailed them but have not herad back from them yet. Does anyone have have any ideas on what could be causing this? Thanks for the help
Unfortunately AEA guns are famous for this, I have a max 357 that was leaking as soon as I bought it. Bin fixed it for me right away so it wasn't a big deal but there's a reason why AEA guns are cheap lol.