Hey also finished the instruments exam today, and came accross some questions that i have not seen before, the first as mentioned before was to do with the gimballing error which i selected the answer with imperfections in the building of the gyro. also another one which i didn't come across before was when turning from south west to south east, what heading shall you roll out on? i selected 115 degrees for this one. other than that i think all the other questions were the same as in the databases.