Service tech came today. Super nice guy and very helpful. Walked me through everything I should keep and eye on and do before my 50 hour service as he was performing the service (regular greasing, filters, checking axle fluid, etc.). He said Kubota has acknowledged an issue with the quick couplers and that its hit or miss whether a new owner will have an issue. They knew as soon as I called what they needed to do. He ended up replacing both sides of the quick coupler and cleaning everything up nice. Topped the coolant off, left me the rest of the coolant jug and a quart each of oil and hydraulic fluid. Happy with my dealer's response on this one!