Hi Dave
I can imagine that in the old days when one of these rolled from the factory floor, all panels were nice and snug. But with wear and tear gaps started to appear especially around all the panels giving access to the engine and guns. The fact that some of the panels came off during flight did not help much either. (Inferior latches that were fixed in later revisions). Also, the 190 is made up from 4 main sections, the main wing (i), the fuselage from the cockpit to just in front of the tail (ii), the tail section (iii) and engine/ cowling (iv). Definite seams are visible between these sections. (My first post showed sections ii and iii).

I've highlighted some of the most obvious gaps.

Thanx