datasheet my friend!
http://www.mouser.com/ds/2/260/HLG-185H-SPEC-806126.pdf
if youre doing what i think youre doing to get above 36V you want 36V "A" model, not 42 or48 V
i figured out (after i bought one) that the 36V driver can be turned up to 40V with the pot so it can handle all of any 3070 or 3590 with room to spare
3070@ 2.8A = 38.59V
3590@3.6A = 38.49V
a 185 has 5.2A so you could run 2 cobs each at 2.7A (with 3590s you could prob use a -B as well,
a 240 has 6.7A so you could run 2 3590s at 3.35A
a 320 has 8.9A so you could run 3 3590s at 2.96A