Hello,
This is what I could do best , not bad I must say, for a non-english native speaker.
Should I think about retaking it? My goal is a college where the average GMAT is 630...
THE MOST accurate practice results I got from OG:
test1-680 (Q49 V35)
test 2-660 (Q47 V34) the evening before the actual GMAT
Others:
Kaplan-test 1- 560 (Q39 V29)
Kaplan -test 2- 540 (Q34 V28)
Mgmat- 610 (Q44 V31).
The only useful tool I got in studying was OG11 since I totally disagree with Kaplans' book's methods.