While taking it apart, I did notice a few things that escaped me the first time I opened this up. The first is the main needle. It almost looks like it's bent or crooked.
Having never seen a different one, I'm not really sure if this is wrong or not, but there it is. I also noticed that the O-ring that sits on my float assembly - the larger of the two O-rings that goes underneath my float weight - is able to spin almost freely around in it's notch. Probably worn out. So it looks like I'm going to have a bit more of a shopping list for the procycle folks.