@thebiguke definitely no fun. Use of Kapton tape on surrounding parts will be required. Preheat the board (I try to keep it around 80 deg C to 90 deg C) Then use lots of flux, soldering braid and a nice chisel tip for your soldering iron should work. As for temperature, I use whatever melts the solder since it should be quick and hot to melt it. To cold it will not melt the solder properly and potentially you’ll tear the traces; to hot and you’ll melt the solder pads on the motherboard. It does take practice….