Ok. This will hopefully help others with Fox shock issues in the future. As an FYI, I have a link below to a great thread over on MTBR that covers a lot, lot more. So, the design on the RP* shocks is an interesting one. I guess I'd say less finesse, more brute overpowering of the forces of physics. That said, they are a marvel when you consider how well they do a lot of things. So, part of my issue with this shock has been the need to use propedal, even on a bike that should be designed to not need it. The reason, which I uncovered with the recent seal replacement, was the lack of any rebound damping. Rebound damping is controlled through a small port that allows a controlled amount of oil back into the reservoir. It is a COMMON issue with these shocks that a seal fails and air makes it way into the reservoir negating any damping function. Essentially making this an expensive spring. This requires a rebuild, unless you're willing to crack the sucker open and attempt it yourself.
So, two possily routes for me, neither of which are going to be travelled until the fall. One, send this into Push where they will rebuild the shock and also revalve the rebound. I don't yet know if their rebuild is significantly different than Fox's would be, but I would at least get the Push tune which appeals to me. It does cost though, so if the shock is going to poop out every other year I may go: buy a Monarch. More money, obviously, but may be worth it.
Anyway, there's a cutout below which helps visualization and the thread on MTBR goes into a lot more detail on which ports access which sections of the this shock, what functions do what, etc.