Picked the truck up from the shop today. ARB paid for a complete tear-down and replacement of the seals under warranty. Everything is working fine now. Shop said that they have had that happen before, but acted like it didn't happen often. I believe from hearing from others that it happens quite a lot though. They also said that it is a new design, so it seems like ARB is quite aware that this is a weak spot and is trying to make it more reliable. Hope I have no more trouble with it. I am please with the customer service at the shop and at ARB. We'll see how it holds up.