I have a 2012 Nissan Versa hatchback with 6 speed manual in it. The car runs fine, no issues, but gear changes are clunky in the shifter. It is not silky smooth. Will a better gear lube make shifting smoother compared to the factory fill? The car has a Nissan branded synthetic 80w-90 gear lube in it. How can I get a smoother feeling shift without the jerky clunk?