INSEAD application on a weak quant split

Morning,

Currently targeting an application into INSEEAD Sept '19.

Profile: CFA and maths major but i just cant seem to get on top of the quant.
GMAT attempt 1: I did the 3 OG2016 books and mahattan prep as well as 2 official GMAT exams always scoring 85%+ for quant.
Result on exam day (650 V39 (88%) Q40 (39%???????))
GMAT attempt 2 (6 weeks later): I did the 3 OG2019 books and 6 official GMAT exams always scoreing 85%+ for quant and in my last atempt i got 1 quant question wrong.
Result on exam day (690 V40 (90%) Q42 (50%???????))

1. Could any body give me an indication of the likelyhood of me being accepted into INSEAD as an african candidate having traveled africa and europe and worked in mining for 4 yeards and corprate finance for a further 4 years.

2. Alternatively do you have any idea's on how i can fix my performance in the quant since i know i am more than capable but just cant seem to get on top of it in the actual exam even after having done all OG16 and OG 18 examples.

Any advice would be much appreciated!!!

Thanking you!