Just be patient with intake, exhaust, and water fitting fasteners. Use a JIS screwdriver on any cross-head fasteners, please! And if things don't move, check fasteners again. No need making things worse getting impatient. There are "dowels" - thin tubes that go around bolts and align the head - don't screw them up. And don't loose the oil flow controller (I'm assuming the 1200 has one like the 1000). Anti freeze will need drained even more than the oil.