Crown tightening

[OysterAbba]

Hi,

Although this may be obvious I just need some insight from some of you experts.

If I tighten the crown until resistance and then back it up 180 degrees (at this stage it's not unscrewed) and then tighten it back up again until it's snug is this alright?

In essence what I need to know is whether I have to completely unscrew the crown and start catching threads again to tighten or by backing it up from a tightened position and then re tightening is just fine.

Would appreciate your comments.