Macky,
I'm a bit surprised to hear that tachos are still a problem. This situation arose about 8 months ago when the examiners suddenly increased the depth of questioning in this subject. I throught that all of the FTOs had upgraded their notes accordingly. There was certainly a post indicating that Bristol had done so. Is it perhaps the case that the examiners have done it again.
If you can remember the questions, I will attempt to give you the correct answers.