SN: H07200D655110, MaxEmerge 2 Vacumeter, bi-folding, 2-point mount, 30" spacing between rows, (4) 70-gallon application tanks, Raven liquid fertilizer control, Precision Planting eSet planter unit drive, includes John Deere Computer-Trak 250 Monitor, Seedsense 2020 planter control, manual (all are in office), believed to be air in the lines that will not allow center wheels to raise