Patio door handle

Hello there! Thanks for reaching out to us. Is the installation hole center spacing for the handle 3-15/16"? If so, have a look at the 82-030 and see if you think the specifications could work for you. 

You also might want to see if the mortise lock inside the door is the culprit. To check this, remove the handle set and try manually throwing the lock with a slotted screwdriver. If it doesn't throw, then the mortise lock will need to be replaced also.