@ceylonfj40nut Sorry, I just saw this post. I’m not far from where you stayed and frequent that area. Hope you found all the cool spots around the Albert Pike and Little Missouri Falls area. Tons of roads to explore.
Could be the 3rd member gasket, or the o-ring on the actuator. The o-ring is the easiest to check first. Do a search on how to remove the actuator. It’s a fairly simple process.