FEL help needed thanks

[astro1949]

i do not know anything about FEL's.
pictures are of a BESKO Joystick on a TYM 353HST.
the Ball will not stay in upper triangular part --

can i just replace joy stick "BOX" via two cables ? Is this pretty standard --any JS will work ?

what specs do i need to know when replacing ? nearest TYM dealer is over 100 miles away --

any help will be great !!

thx
bob