Evening together. Short to me. My name is Tim am 25 and come from near Ulm. As a everyday car I drive a higher-mounted T4 Syncro with everything around it. Now a vintage car is supposed to be here for the summer. Have found a nice w123 200d near me. Condition fits everything. However, the brake does not build up any pressure, means it is difficult from front to back. You have to press Mega on it to slow it down. Screwdriver experience is available. Is this a simple problem? He thinks it is a membrane. Greeting Tim