Whats up guys. I have driven numerous 5-speed Mustangs that when cold, the shifter kind of vibrates when going into gears, especially second. My cousins GT does it, my 03 GT used to do it, and my 01 cobra does it once in a while. All 3 cars have the Tremec TR3650 tranny. Is this a common problem with this transmission? Could this be a bad synchro? Or is it just that the tranny fluid isn't warmed up enough? Like I said, it only happens when the car is still warming up. What do you think it could be? Thanks.