This is the method I use on actual 60’s and 70’s fenders, should work for you.
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The gear and tuning post shouldn’t need this, but the stem and bracket can sometimes benefit from this. It takes many rotations to see improvement, though- you have to really work it in, and it can be messy, so if it’s needed, it’s best to remove the tuner from the bass to do that.Maybe work some grinding compound through it and see if that helps?