Need help repair my hori vx

Recently my HORI VX Fightstick B button started to mess up a little bit it would register hits by itself when im not pressing anything. I want to try to fix this problem before i send it in for repair/exchange. P.S. is there a way to fix the stick without opening it.

It doesn’t sound like something you can fix without opening it up. And even if you open it up, the switch in the button is probably on the fritz. There’s no easy way to fix that.