Patio door loose lock mechanism

Hello, The lock mechanism on my patio door is starting to be loose. The handle itself is not loose but the lock mechanism which is situated inside the handle doesnt go all the way up or down (won't fully extend) when trying to lock/unlock the door. I can't seem to find either a full handle set replacement or just the mortise lock. The lock mechanism on my door is INSIDE the handle itself and not inside the sliding door frame like all the handle i find in online stores. I will attach some pictures of my door and handle.
 
And here is what i could read etched in the glass in the bottom corner of my door :
Guardian geneva, nyANSI Z97-I-2004
16 CFR 1201 ii
Safety tempered
SGCC 2259 I/8UA
BS 6206: 1981
CAN/CGSB-12.1-M