After defrosting the ice maker, check to be sure the defrost “tab” at the bottom of the coils at the back of the fridge are of the long style, not the short style. You tube has videos about that included in many replacing the ice maker videos.
Check to be sure all drain lines are functioning.
Seal the ice maker with caulk as mentioned above.
An easy job, but frustrating one.
May your smiles be many and the miles be plenty.
Karen & Allen Van Zandt