I have an HP8550n printer hookup up to a network that both macs and windows print to. We recently had a new fuser and a gear & drive assemblies installed. Shortly afterwards our printouts do not produce the correct color. The color on the printouts are very saturated. If something is to be flesh color the printout will be orange red. If the printout is to be grayish blue it will print out purple. I have replaced the toners thinking something was wrong with one of them as well as the drum kit and still no change. Any ideas?