Complex sentence: Alleged problems with reconstruction to adapt to the new gun was not resolved in the summer of 1938, desperate to get more aircraft in the air, Avia decided to use a third machine gun in the nose.
Split into simpler sentences: Alleged problems with reconstruction to adapt to the new gun was not resolved in the summer of 1938. Desperate to get more aircraft in the air, Avia decided to use a third machine gun in the nose.