I just took test 4R. This is my 3rd practice test and my scores on the first two were consistent (29-30) but I just bombed test 4R and dropped 5 points!! This does not feel good one week away from the test.
sorry, that really sucks. I had a similar experience with 6R: I dropped 2 points! Then I took 4R and improved on my old best by 3!
Just let it roll off your back and take another test. I if the same thing happens thing maybe you can freak out.