I don't have a full answer for you because I'm rather tired, but I'll try pointing you in the right direction.
Section 179 and sales involving Section 179 aren't reported directly on the Business return. It "passes through" via the K-1, so the sale and it's gain/loss will end up showing on the 1040, not the business return.
As a side note, the numbers you showed don't seem to include regular depreciation (or Bonus depreciation, if you didn't elect out of that).
