AC Condenser Top Hose Quick Access

[TomsFocus]

I've really cocked up here...

Had AC regas two weeks ago, they wouldn't  fill it as it didn't pass the vac test.

Fitted new condenser on Thursday, partly in a rush in the dark.

Had the system regassed today - only took half an hour which seemed quick but now thinking about it I guess they didn't vac test it this time.

All the gas had fallen out within the hour.

I can see a load of flourescent dye on the left hand side of the rad pack, pretty sure it's coming from the top hose, either I left it loose or damaged it maybe.  Is there any quick way to access the top hose connection to check though?  I don't want to be on the floor removing both undertrays and the rad support just to get to something that is inches below the grill.  Can I get there through any of the grills?  Or I'd even remove the bumper if that's easy enough without having to jack up.

If I can fix it early tomorrow morning do you reckon the garage would give me a discount on another regas?  If the pipe is loose obviously that's my fault but I did expect them to test it again before filling.