Scores Keep Going Down......

Passed my first two Sample/Mocks through CFAI, but the scores have just kept going down since there… Precipitously! …perhaps it’s fatigue setting in. Anyone else here find the next two samples much more tricky? Couple Q’s for you guys…I have the Schweser provided CFAI actual '06 Exam, and these mock/samples seem considerably harder; for you guys who have been around this block before, what should we expect? I’m surprised how much computation is involved on the sample exams given the time allowance, is this what we should expect for the real thing? Also, is it me, or are there inconsistencies in the Schweser/CFAI curriculum? I hope I don’t, but I have a feeling I’ll be asking similar Q’s on the same board (LII) next year…ugh…