Let’s say that the budget chosen is X per month, meaning 12X per year. For ⅔ of the projects, the stream will last a full year, so that would require 8X to cover their budget. For ⅓ of the projects, the stream would last two years so we need 4 * 2 = 8X to cover that stream. That sums up to 16X. Now we need to make sure there’s an extra fat so that projects can be covered for another six months if there’s an issue with the next governance vote (or if we decide, like we are doing now, to postpone it to better time). So we need an extra 6X to cover all these extra months. That adds up to 16+6=22X. Please double check the calculation to make sure I got it right. Now I don’t see any issue adding another 2 months to the fat so that it makes 24X and it makes everyone more confortable with the new round number.