We took the trailer into the dealer the other day and they replaced the brake shoes. Apparently one of the service advisers had heard of this problem before and was sure the brake shoes were too hard! While the unit was in the shop, they called me and said the manufacturer did not believe the brake shoes where, in fact, to blame and wanted to see the shoes before they would pay, which meant I would have to pay for the repair up front and get a refund later. I said "fine, it has to be fixed!" But when we picked up the unit, they said there was no charge after all... not sure what that was all about, but we just got back from a fairly good trip and had no problems with the brakes at all!!!!!!!! So I hope that little problem is all fixed up now.