If you can't fly without FD command bars you end up like AF447. Make sure you agree with what they are telling you before blindly following them. You shouldn't need them if you are a real pilot so why follow them if they are wrong?
I won't repeat the flight with the check airman totally screwing up my FD so I ignored it and flew our clearance raw data until he caught up. It was go into a diving left turn or a climbing right turn which was our clearance. He finally caught up. He was checking me out as a 767 captain. He never said a word about his screw up. I passed and everybody was happy.