Playing Kerbalism and always had issues with the ATV to properly supply my ISS. So I sat down and wrote a MM patch for Kerbalism and the five ATVs, trying to mimic their payload as much as possible. It is working for me in Stock Kerbalism, as well as JNSQ Kerbalism. Just the dry mass payload above food you need to add Gas tanks are duplicated, to allow Nitrogen or Oxygen. There might be better options to structure the PartSwitch, happy on feedback to learn. Leaving it here, for anyone
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