Jetmouse,
I haven't quite finished (2 to do) but here's a tip if you use the PPL confuser:
Photocopy the answer sheets and save your answers when you do the PPL confuser questions the first time, then when you do them the second time you can compare them and see those questions you are consistently getting wrong, so single those out for additional study before taking the exam.
Works for me
Good luck
SD