Complex sentence: Tail surfaces were built up from steel tubing and were also fabric covered, not following Arado's trademark layout of a fin and rudder forward of the tailplane; instead the tailplane was high mounted on the fin and supported by steel tube' N' struts.
Split into simpler sentences: Tail surfaces were built up from steel tubing and were also fabric-covered, not following Arado's trademark layout of a fin and rudder forward of the tailplane. Instead the tailplane was high-mounted on the fin and supported by steel tube' N' struts.