After the lead ship went into service, cylinder heads of the main engine were damaged and had to be replaced after thirty-six thousand hours of operation. Forty seven valves had to be replaced at the cost of three thousand ¥ each. Both the axis of the main propulsion and axis of the rudder had been cracked while in operation. Another five ships of the class had to have the auxiliary power unit replaced at the cost of a hundred twenty thousand ¥ each. In addition, the cranes and hydraulic loading system were nonetheless installed onboard all ships despite both failed to pass the certification tests. As a result, none of the ships had the capability to load and unload cargo as originally designed, but instead, must rely on cranes on the pier to do the loading and unloading. Another inherit design flaw was that the ship consume relatively too much fuel in operation. As the result of the massive quality issues, most ships of this type had to return to dock to be reworked and repaired, as with other poor quality product made in China in the era of great political turmoil. Although none of these quality issues were encountered at the time of the conversion, the poor quality of the ship has definitely caused PLAN to lose confidence in the hull and decided not to risk it by keeping the converted medical evacuation cargo ship (APR) in service for prolonged period of time, because despite being a relatively a new hull, the hull selected for conversion was among the seven built during Cultural Revolution, and it was only a matter of time before quality issues begin to show after some period of time in operation. After proving the design of the conversion was successful and receiving certifications, the ship was returned to civilian service and went through the same rework and repair like other ships that suffered from poor quality workmanship. For the same reason, the planned conversion of smaller Type New (Xin Zi Xing, 新字型) cargo-passenger ship was not carried out either because most of those ships were built in the same era of the Cultural Revolution. However, experience gained from the conversion has directly led to another conversion design of roll-on/roll-off ship Huayuankou to medical evacuation ship (AHP), which eventually led to the development of Type 0891A training ship. Conversion design of Huayuankou roll-on/roll-off ship to medical evacuation ship (AHP) was a direct development of Type Long March conversion, but on a greater scale and more complicated. In comparison to the Type Long March and Type New cargo-passenger ships selected for conversion earlier, Huayuankou is larger and did not suffer any quality issues because it was built in Japan by Kawasaki Heavy Industries.