P360 maintenance help

I’ve had my p360 for 3 years now without no maintenance done to it what so ever. It squeaks every once in a while but recently, the stick is not acting properly. One side is looser than the other and I’m wondering what would cause that. Also, the stick is very stiff and always has been. Is the spring inside a p360 the same in the happ comps and is it easily replaceable?

what are some signs that a p360 stick is dying?

do p360’s need regular maintenance of any kind?