The PZB on the BR442 sets to 55 but there is no switch to change it, I looked for guides but that part of the site is now closed as the link on the home is dead. Using the BR442 I am stuck at slow speed because there is no way to change the PZB from U to O and I can't get any timetables on time or the brakes are applied. How am I supposed to change it back from slow freight to passenger?