You have to find your own paste. Power diplomacy to 400 it dead easy. Just do lockbox missions. You may even come out ahead.
Ah, so its all about just spamming all 5 people off on diplomacy missions then? Yea, I can see how it is still profitable that way, seems like paste is more common than Neural Augmentors for the Slicers.
Though we dont get lockbox missions as Diplomacy do we? Did you mean Medical Supplies?