@Dheana90 I think that if you feel really really confident that your writing was worth a 7 then go for it. I got L:8.5 R: 8.5 W:6.5 S:7 on my first attempt and asked for a revaluation because I felt I have done well at writing. Meanwhile, I registered for a second exam and prepared myself for retaking it.Don't go,
coz you have 2 moduiles
Dont go for revaluation. try again if you want. The reason is your other two modules are high. When a candidate has two modules higher, but 1 module is low with 2 point difference they automatically re verify.
Trust me Buddy don't go coz its a waste. I know your feeling .. i had the same issue. was stuck at 6.5. Re-evaluation changed nothing. Only best shot is a good 1 weeks prep. write more words. like essay i wrote 300 words. see youtube video.
One day before my second attempt they contacted me to tell me that the indeed were wrong and that my writing was corrected to 7 (I presented the second exam anyway since I had already paid for it; the only difference was that I got 9 in reading). When you ask for a revaluation it's done by a completely different professor who doesn't know what your original score was. Plus if it turns out that they were wrong and your score is adjusted, they'll give you back the money you paid for the revaluation.
Of course, there's always the risk that your score doesn't change, but if you feel really confident about your writing I would suggest going for it and prepare another test meanwhile. There's always the risk to mess up another band in a second attempt, and if you were short just for .5 in this attempt I think it's worth trying it (as long as you truly feel that your writing was worth a 7).
Good luck!