Re: side focus issue
Sounds to me like a dry sealing 'o' ring or dry threads. Try removing the turret and applying some silicone grease to the 'o' ring and see if that makes it easier to turn. A tiny drop of light oil (like 3-1) on the treads of the mechanism might help as well. just a tiny drop, no more.
I us dielectric grease on 'o' rings. It's available in an auto parts store in the electrical section. Great for any exposed electrical connection too.
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