Bob the 2nd link don't work and the 4th link I can't access???

Some handy info wish I had it when I brought my first rep I brought a tag Carrara and after Reading just found out it's asian 7750 but my seconds run at 6 o'clock .....should I really worry I hope it don't just stop working !! Also is there anyway I can change the movement ?? Sorry if that's a dumb question