Moin, as described in the title, my brake can be aired no matter what. I bought the scooter (Speedfight 2 LC) the other day after the scooter stood around for 10 years. Now I wanted to vent the brakes or replace the entire brake flow, which somehow does not work. I open the venting screw, press the lever and hold it tight, close the screw. But nothing comes out of the venting screw no matter what, no liquid, no air ( I checked). However, once liquid comes out of the screw, if I leave the Bremen for about 30min in peace, but with the next pump nothing comes out again. I think the front brake is full of air, because you can pull the brake lever all the way through to the handle and no air bubbling out at the balance tank. The rear brake still works, but cannot be ventilated. Thank you for the help in advance!