I suggest you replace the stick and buttons; there are multiple posts and videos of problems with the stock stick and especially the buttons.
I kept some components of the stock stick, but replaced the actuator, spring, restrictor, and pivot to sanwa parts. I have been using it for less than a month, and am seeing how long it lasts, fyi. My cousin (whom I received the se case and broken stick from) says my custom-ish stick feels like his sanwa jlf, only very slightly more stiff (than the sanwa jlf); he has been using his te stick, and couple of other sticks, for many months. I did have to modify the jlf-clone’s main body (stock mad catz se stick) to accept the sanwa restrictor and added painters tape as a spacer to tighten up the tolerances (as well protect from possible washer float). I did not glue the washer to the main body.
I noticed the clone’s restrictor( vs the sanwa restrictor) is thinner and the square gate appears to be shaped differently (tapered, and slightly larger?)
I ordered the parts along with buttons (they failed on my cousin whom put them in a custom case) from lizard lick and everything has been amazing since I placed the order
My SE Stick