score cancellation?

nicole_mmayer

I took the April test and scored 164, but was PT-ing in the high 160s. My goal is to score in the 168-174 range, but rushed to take the June test under unideal circumstances (I'm studying abroad and was not in an ideal testing environment) because the logic games is my best section. I scored 162 which I'm not happy with, and plan to retake in the fall -- any opinions on whether it would look worse to keep this lower score or cancel it? If I keep it, is it worth writing an addendum at all?