Hi Gents, I have just bought a Tissot Seastar 1970 with a 2481 movement.  After opening the back, it seems it is in fairly good condition. No rust or dust.  It is ticking well and what I really like in this movement is that the date can be set by pushing in the crown. And this is where the problems start. After a couple of pushing, I could not be able to set it anymore. I was going to take apart anyway to clean and lubricate it. So, as soon as, I started dismantling the movem