It is astonishing that you had such a good eye for rifles back in the 1980's... so far every rifle has been exceptional and original. It is rare to have such good judgement today; even with all the aids available, from books to forums one still runs a gauntlet of risks buying a rifle through a dealer or auction house, and fewer still have the knowledge (or recall off-hand, away from resources and notes) to meander through a gun show doing (buying) so well... I can tell shite from shinola these days, but there were few that could in the 1980's.
Regarding the bolt, bolt mismatchers don't come better, short of the original bolt this is the next best thing. Amberg's are some of the finest rifles made during the war, the introduction of the new features occurred very early with them, consistently also, the only variable usually is the stock type, beech was introduced late in 1916 and increasingly became common, but generally no more common than walnut. So, Amberg's are often the nicest wartime rifles you can own, especially later in the war. Comparing equal examples of the same period, different makers the differences can be stark, though to be fair to the Prussians, most of their operations were involved in other more complex weapons, MG's and pistols, - and highly industrial areas, cities like Berlin and Erfurt, had more than their fair share of labor unrest, starting in 1917 it became quite restive and disruptive. Bavaria, outside of the large cities like Munich, labor was far more compliant and manageable.
