Richard. Doug and all
Having very few personall sources myself (all second hand), I feel stating certain specific dates are hard to do unless there is a valid source for this in Germany. We have lots of individuals for instance who was so called acting commanders while the post was officially filled by someone else who might have been wounded, on leave or even temporarily assigned to something else. To use a date giving an individuals next assignment can be dangerous, since the person can be "in between jobs", and having a rest in between these two assignments.
Looking in Ritterkreuzträger by Obermaier, I notice for instance that he refrains from saying any date when Amelung left his post as Staffelkapitän. When it comes to Fitzner he specifically states that when he received his RK he was Staffelkapitän with 1./St.G 77 while at his death he commanded 5./St.G 77. Since he received the RK on 27.Nov.1942, the date listed above (11.42) cannot be correct if we are to believe Obermaier.
I myself have no problems as such to see Maue as St Kap of 5./St.G.77 from ca mid 1942 to his death on 4.1.1943. Evidence? None what so ever...
B Rgds
Stig