The thermostat is not easy to achieve because the air supply and exhaust manifolds (I) think you block the thermostat is not reached. I really need help figuring out how I can remove parts, so I can easily reach the thermostat. Dank.Ich follow the radiator hose to the thermostat. There are two screws. I need a custom-made key to reach the screws, or do I ensure that removing the blocking parts of the thermostat. Do you know where I can this type of key that can reach the screws?