New SSD (Intel 520-120GB)  - Low WEI score

I am getting low Windows Experience Index scores (5.9) with my new SSD and am trying understand what is going on.

I have the following setup.

Intel 120GB 520 Series SSD

Intel I7-2700K

Asus P8Z68-V PRO/GEN3

Windows 7 (all updates installed)

Latest SSD Firm ware installed

The drive is connected to the Intel Z68 Serial ATA 6.0Gb/s connector in AHCI mode

I have tried the Intel SSD Toolbox optimizer

Here is the output from "winsat disk" command, why do I get the 1.9's?

> Running: Storage Assessment '-hybrid -ran -read -n 0 -ransize 16384'
NV Cache not present.
> Run Time 00:00:00.00
> Disk  Sequential 64.0 Read                   530.07 MB/s          7.9
> Disk  Random 16.0 Read                       325.48 MB/s          7.9
> Responsiveness: Average IO Rate              1.68 ms/IO          7.3
> Responsiveness: Grouped IOs                  17.09 units          3.9
> Responsiveness: Long IOs                     59.63 units         1.9
> Responsiveness: Overall                      1019.11 units          1.9
> Responsiveness: PenaltyFactor                1.0
> Disk  Sequential 64.0 Write                  504.50 MB/s          7.9
> Average Read Time with Sequential Writes     0.213 ms          7.9
> Latency: 95th Percentile                     0.600 ms          7.9
> Latency: Maximum                             2.236 ms          7.9
> Average Read Time with Random Writes         0.207 ms          7.9
> Total Run Time 00:01:11.25

Any help is appreciated.  Thanks.