The rush to get guns, with respect to Germans, English, and French, was really 1914 right? By 1916 that was solved. Thus the Brits really didn't want the pattern 14s. Their own production of SMLEs had caught up and was doing fine. I'd have to expect the Germans had the same thing. From 1914 to 1916 it would be massive production expansion. A rifle shortage. After that everyone is armed. So just replacements. Not terribly hard. WW2, with respect to Germany, is something else as they were losing armies right and left. WW1 wasn't that way for them. So I'd expect 1918 production to be pretty sedate compared to 1915. Poor workmanship would be more a result of cost reduction. "Quit sanding and painting the axles for gob's sake.