I took both version 4 and 5 twice and they were both the same as the first time. What you need to do is try to remember the questions you were not sure about and come up with their answers, this will be helpfull. People say anything, last week I took version 4 for the second time, same question and I had a 91% on the test. A friend of mine toook version 4 twice, from what I was told, the test is the same.