Need new lock for an Andersen Tribeca sliding glass door

Hi please "I NEED HELP!" I brought a house that has Andersen sliding glass doors everywhere. They were installed around 1996, After much research I think it might be a Tribeca Style door. I have tried the part # which is 2565622 and you had only one inquiry that was not helpful, So I'm hoping that if I send you photos of the exterior as well as the interior you might be able not only to identify the lock but direct me to where I can find the replacement piece. 1st photo is the lock in door. 2nd & 3rd photo is a side view of the lock with and without the silver cylinder. 4th photo is the interior parts as they look inside the lock. The last photo is all the interior parts. The small silver cylinder that sits in the wheel and holds the gold arm of the interior thumb latch is what has broken. I need to know what I need to buy in order to replace that silver cylinder. The name & part # would be a life saver. Thank you so much for you time & help. Carol

It appears that from the center of the key hole where the silver cylinder sits to the screw hole is about 1 inch. Thank you for your help