Original sentence: By the Armistice, all 80 aircraft had been completed, but the last batch did not reach the front and was instead delivered directly from the factory to the Allied special commission.Furthermore, inferior quality fuel prevented the Mercedes D.IV demonstrated that the incorporation of the fuel tanks into the engine nacelles was problematic.In a crash landing, the tanks could rupture and spill fuel onto the hot engines.In response, Gothaer produced the G.Indeed, the G.The Gotha included an important innovation in the form of a "gun tunnel" whereby the underside of the rear fuselage was arched, allowing placement of a rearward facing machine gun protecting from attack from below.The Stossfahrgestell proved so effective, it was retrofitted to all G.The new tail unit, known as the Kastensteuerung, improved the aircraft's marginal directional control in single-engine conditions.This posed a serious problem because landing accidents constituted 75% of all operational losses.To this point, bombers were vulnerable to attack from this quarter and the Gotha removed this last blind spot.V aircraft serving with Bogohl 3.Va was replaced in production by the G
Edited sentence: By the Armistice, all 80 aircraft were built but the last batch did not reach the front and was delivered direct to the Allied special commission.Gothaer produced the G.IV demonstrated that the incorporation of the fuel tanks into the engine nacelles was a mistake.In a crash landing the tanks could rupture and spill fuel onto the hot engines.Inferior quality fuel prevented the Mercedes D.The G.The Gotha included an important innovation in the form of a "gun tunnel" whereby the underside of the rear fuselage was arched, allowing placement of a rearward facing machine gun protecting from attack from below, removing the blind spot.The Stossfahrgestell proved so good that  it was fitted to all G.The new tail unit, known as the Kastensteuerung, improved the aircraft's marginal directional control on one engine.This posed a serious problem because landing accidents caused 75% of operational losses.V's in Bogohl 3.Va was followed by the G