"The cynic in me also says that it now appears to be more a test of which school has the best feedback, than an actual test of knowledge"
Of the November sitting exams, I had seen about 55% of the HP&L questions from the Ground Training Services feedback and 0% of the General Navigation questions, and passed both (and others).
I'm not sure you can get through the numerical/ problem type questions without knowing the "how to". I'm also pretty sure I passed because I'd been taught the process for whirling the wheel and doing the sums.
h-r