This issue is beginning to get annoying, especially when I end up head banging a hanger after the park brake trips off.CH rudder pedals assigned on rudder axis and differential braking.Method:1. set parking brake on2. a few seconds later, park break trips offIve tried playing with the null zone and sensitivity but this does not help. Happens on most aircraft types but most often on Md-11. I realize this is not a PMDG issue but would appreciate any suggestions......

Sounds like faulty pedals sending spikes on the brakes channel. Repair or replace.