I bought a 2007 Honda Accord Coupe with the 6-speed manual trans about three months ago. It generally shifts very smoothly, but occasionally malfunctions going from 2nd to 3rd. You feel a notch or stop that makes you think you are in 3rd. The gears grind and the trans throws the shift violently back to neutral and the engine revs high. This only happens every 100-200 miles or so, usually when the car is cold. The Honda service manager says it is designed that way and therefore not a defect and the warranty does not cover it. Has anyone else had this problem?