When underway and the transom is under water I have quite a water leak coming through the hull to deck joint, which has damaged the rear bulkhead and matress.My 306 is only three years old, and Hunter through my dealer is not willing to repair it under the five year warranty. They claim it is not a structural defect, they are prepared to supply the materials but not the labor , which is the big cost,. I feel this is a manufacturing defect , the adhesive was not applied properly,and should be totally covered.Would appreciate hearing from anyone having had a similiar experience.