i just acquired a tag heuer 3000 ladies professional model with a single screw down crown that clicks out 3 times. It looks just like the 3000 photo on this forum. I can't seem to be able to change the date. It is keeping time. Can't tell if it is broken or I am doing something wrong. Does anyone have a users manual for this watch? Or instructions to set the date ? Have searched web and cannot find. Appreciate any help.