i believe the only trucks affected by this are the early built ones, up to feb. '08 models. what i did and which seems to have worked cuz there has been no problems after the repair was massage the retianing ring and groove to help seat the ring as best as possible. i'm thinking when the ring was stamped it may have been out of spec. i hope this may help! you can also try crown tech. support and see if they have any answers for you.