At last! . And I cleaned the intake tract once. Is also with the instruction in the FAQ ́s no problem. The thin hose and the hollow screw were clearly completely dense and glued, the DROKLA and the idler completely dirty. By the way, I took quite normal 7mm petrol hose as a replacement for the small moulded hose. It goes great. But my question: The thin hose goes from the valve cover over the hollow screw into the intake tube. 1) Why is the hose there at all? For ventilation is the big one from both. 2) Why is the hollow screw? Is it heated so that the oil soup remains thin?