Ratchet joint repair tips? (SS73 Grindor)

I recently bought Grindor and his left hip ratchet fucking died on me (it no longer clicks and instead thoops in 2 places and therefore can't get is leg straight down. Does anyone have any idea on what the issue could be and if it's repairable?

Small sidenote: I'm already talking to the store owner about a possible replacement part