Hi, I recently purchased a mint Railmaster XXL, It is in excellent condition, with all papers and box. I own a half dozen automatic mechanical swiss watches, but this is my first fully manual wind watch. When I am winding the watch, it becomes progressively harder to wind, requiring a lot of effort to continue winding until reaching the stop, per the manual's instructions. Is this normal? It doesn't happen on my auto wind watches, which is also normal to prevent overwinding.
Thanks! Joe