Those are interesting settings. I would try the autotune again, and see what you get. Here's why I say that:
When I did an autotune on the #2, with a wall-mount probe, with a model WPS-1503 CPH, I got the following:
P 62
I 902
D 112
You can see the "I" and "D" settings are quite a bit different from what you got.
I recently performed the autotune with the new 1200 GPH, with a wall-mount probe, and got the exact same numbers! So, between 2 Auber units, they "analyzed" the box characteristics of the smoker exactly the same. I found it odd that they weren't a little different, but they weren't!
One thing that may be effecting your autotune is the probe placement. You may want to find a spot, as high as possible (clipped to the highest shelf slide), that is not too close to what you're "cooking" (the bricks). They may be shielding it, but I don't know. Just spit-balling possibilities. This is where the wall-mount probe really excels. When you do an autotune with a removable probe, it will change, if you move the probe to a different spot. With the wall-mount probe, the settings will never change, as the probe is in a fixed location.
As for your program: Try increasing t02 to 7.0. This will allow Auber to "dial-in" the 225 setting over a longer time. Remember, it's testing how fast to increase the temp, when to slow it down, and how long it takes for the box to cool. Change C03 to 0, and zero-out the rest of the settings through step C06.
Let's try this, and see what happens!
I don't know if you've seen this post, but it has some good info on this process:
http://smokinitforums.com/index.php?topic=1285.0