Been there! What's especially annoying is getting used to one system and then transitioning to another which works almost altogether in reverse. Externally adjustable Unertls, Winchester A5s, etc. versus about everthing else comes to mind. Moving grat vs. moving image, or any combination of those. Fortunately, the windage adjustment on the Model 1918 was not intended to be field adjusted and doesn't often need major correction.
All of the various systems for properly aligning optics just HAVE to be better than the one used on JapaneseType 97 and Type 99 rifle scopes. Even the Zf41 is a joy to zero in comparison.