Hi everyone I have a series 3 just noticed brake lights not working checked wires all good so changed switch still same problem removed switch moved piston in with fingers lights work fine I just cant get the correct adjustment on switch whilst my daughter pressed pedal down I can only see a very slight movement in pedal box is there suppose to be more movement it doesn't seem enough to push piston in screw switch in lights come on unscrew you cant get enough travel to work switch I'm a bit stumped cheers