Welp, this is looking much better. All I did was swap the two cables I was using from port 1 to port 2 and vice versa. On top of that I upgraded my HBA firmware to the latest P22 (previously was on P20).
Code:
# ./readtest.sh
h 229.97 MB/sec
o 248.21 MB/sec
m 250.91 MB/sec
v 229.30 MB/sec
w 242.84 MB/sec
p 247.66 MB/sec
r 243.08 MB/sec
c 238.93 MB/sec
l 238.63 MB/sec
f 244.10 MB/sec
t 247.52 MB/sec
g 233.57 MB/sec
b 244.49 MB/sec
a 257.27 MB/sec
n 233.47 MB/sec
u 236.98 MB/sec
x 238.29 MB/sec
k 238.72 MB/sec
d 226.05 MB/sec
e 223.39 MB/sec
s 254.68 MB/sec
i 234.16 MB/sec
q 218.85 MB/sec
j 236.76 MB/sec