I took the printer head out and took all catridges out. I soaked the one screen on top where the cartridge sits on with windex. I have been reading on the forum to soak the print head. I only soaked the screen on the top part. Do I need to sumerge the whole print head? I'm not sure of those instructions because the bottom has the ribbon and other stuff and I didnt want to ruin it. DO I take the whole print head in a bowl and soak it?