Stuck Fine Tuning Peg

My fine tuner for my G string is extremely hard to turn and I was wondering if their is a good home remedy/fix such as lubricant that would help to alleviate the issue. This is a new cello I recently purchased however the instrument itself it quite old, being made in 1956. It does fine when I tune down (make flatter) but struggles when tuning up.

Is this something that can easily be fixed, or is this a job for a luthier?