SewLibra: When the Andersen sliding door handle gets loose, these are the screws to remove. They are on the inside of the door.
SewLibra: Hold the outside handle as well when removing the screws or the outside handle will fall off.
SewLibra: Completely remove the two inside screws.
SewLibra: Set aside the outside handle for the next step.
SewLibra: With the inside handle now being off, tighten the two screws shown on the inside of the handle.
SewLibra: Hold on to the outside handle as you are replacing the inside screws. Righty tighty!