I bought an epos big date small seconds with a unitas 6498 base.

To manually adjust the date, there is a push button at 9 oclock. The problem is that when you push the button, the date doesn't change properly about three quarters of the time. Instead of adjusting to the next position, the numeral shifts about half way.

I am hearing an audible click when I push the button, and the date does move about halfway, but then it sticks.

I have to either wind the crown backwards or pop the crown out to the time-set position and the date will pop into normal placement.

Any advice, or is this a definate service issue??