Gas cap not closing tight


2007 busa. I stopped for gas and when I closed the cap, it catches, will not come up but it like a 1/8 inch gap on the top side, like it not closing. It has a spring feel, I can push it down let off and feel the latch catch. I don’t smell gas, doesn’t appear to be spill over. It is as if it sitting at an angle and not laying flat. Any ideas?