Thanks for the responses.
Looking at what areas are covered by the confuser and concentrating on those is a good idea. I have until now just tried to understand all apsects fo the CD-ROM and then tried the practice questions.
Ground school? Tell me more. Is it possible to get that sort of tuition?
Most people just seem to refer to self study. Although I am fairly sure that for the other remaining subjects I am not going to have any problems I think I will need more than self study for Met. Ground school may be the answer.