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I use a screw driver with torq tip. I use my finger tips to tighten. This way I know I'm not over tightening. Snugged up is all I need. I start in the middle and work outward with your screws.
And I have tighten a water bottle by hand so tight that I could not get the cap off.
A little dab of never seize on that water bottle cap will cure that problem.
Love my little CDI torqe screwdriver, I don't trust my judgement.