I had taken this seiko apart week or so ago . Clean oiled... I wasn't happy with the fact that the mainspring will run down within about 4 hours after taken it off. I wonder,what esle should I look for? I had taken the mainspring out,it wasn't set,looked good. So I clean and oil it , greased the walls of the barrell. Any ideals?
Does anybody know the lift angle , and what amplitude I should be trying to achieve ?
Seiko 7s26-0040