[klemchen]

Hi harrison987,

thank you for reminding me that the Mutterkompass was moved to the rear already on late Gs, the round hatch still remaining there. It was not unusual to keep features that had become obsolete, probably in order to avoid confusion within the production process; think e.g. of G-5 cowlings being used on many G-6s and G-14s. But one of the main reasons for introducing the K was standardizing and cleaning up of production procedures; that is why so many "small parts" were changed for the K.
I do not think that the pictures in the K part list are very reliable, because often drawings were simply taken from old lists. The K list contains even some drawings showing the large rectangular hatch in section 5 (instead of the trapezoidal hatch in section 4). On the drawings of the fuselage structure Baugruppe 109.180, p. 26/28, the circular Mutterkompass hatch is deleted (and the smaller circular hatch on the starboard bottom of section 2 present). Surprisingly, there is also a footstep on starboard, although to my knowledge this was omitted on real K-4s.

Best wishes,
klemchen