I picked up a Citizen Bullhead Chronograph off eBay from a seller who is highly recommended on this forum (and has good eBay feedback). This is my first automatic chronograph.
I wore the watch today, and noticed after one hour that it was fourteen minutes slow. I adjusted it, and one hour later it was six minutes slow. The third hour it was eleven minutes slow.
I started listening to my watch and paying attention to it, and I noticed that if I rotate it from 90 degrees slowly until it is parallel with the ground it will sometimes stop. Then, if I give it a little shake, it will start again. I'm guessing that accounts for the slowness of the watch.
Additionally the chronograph sometimes stops and then goes again after a little shake. Also it sometimes tries to advance one tick, fails, tries again and succeeds.
Any suggestions before I contact the seller? This watch may have sat for a while before it was sent to me, although the seller claimed that it ran fine.