Filed under the category of two steps back one forward, we have taken apart the rear end again. Why you ask? The gas tank isn't venting. You could fill up 0.1 gallons at the pump before the filler neck fill up such that it would trip the full safety mechanism of the pump. Although not critical to driving the car, it is annoying.
In this write up, the gutted the float that controls the tank venting. I didn't see why it would be required since we swapped the whole STI tank assembly. If anyone can clarify why this is required, it would be great.
Anyway, we took apart everything in the back to get to the tank. For now, we have gutted the float.