I though the clutch was slipping. I sat in the car, engine off, 1st or 3rd gear engaged, the car rolled forward, I watched the supercharger turn which suggests positive clutch engagement. My hand brake assembly broke so when parked I rely on leaving the transmission in gear as the only means of preventing the car from rolling. Obviously, recent events have shown that this not a secure method. I put the transmission in reverse with the car pointed downhill and it held. Normal condition? Anyone else experience this condition?