It's very difficult to adjust my breitling aerospace. When i turn the knob the watch barely responds. sometimes it does and sometimes it doesn't. Even when i turn the knob very fast. What can be the problem?

Normally this is from the crown and case tube being dirty. This slows down the rate at which the crown can be turned so the switch inside cannot get triggered to move the hands quicker. Sometimes the turning action can also be so that the switches do not actually 'see' the crown was turned and so the hands do not move.

The solution is to have your watch serviced.

Hope this helps.

Ken Kotoski
Yellowstone Watch Inc.
www.yellowstonewatch.com