What's your "best" way of handling a uniform violation?

Politely pull aside and bring the issue to their attention and show them if needed. If they still do not fix the issue then take it to the higher level of correction. We are or I know when I had any issue with uniform correction, I was pulled to the side immediately and told of it. Everyone in the military are adults and should be treated as such.

Use professionalism when pointing out the correction or violation. Make sure you know the right answer if the issue is a measurement or uniform especially with this OCP/UCP change. Nothing is worse then being corrected when you don't have the facts and go off what you were told. Read the regs ands Polices.