Low said he was able to do this for the LM-6 (Apollo 12) mission because of the favorable LM weight picture. He stated, however, "I believe that we should understand that this increase in weight allowance does not alter our basic agreement to provide for a scientific payload of 300 pounds (136 kilograms). In the event that future difficulties with the Lunar Module require additional weight growth in the basic spacecraft system, we will have to once again reduce the scientific payload to 300 pounds (136 kilograms). . . . I wanted to be sure that we agreed in advance that the added 45 pounds (20.4 kilograms) of scientific payload allowance would be the first weight to be deleted. . . ." Hess concurred with the memorandum.