Originally Posted by roy'sz

the reason you are getting a thud is becaue you are going too slow and the timing on the car is fighing the gear. try pushing slightly on the stick when slowing using the break and it will "slip" out of gear. normally it is about at idle that this happens because the computer try's to set the idle while your engine speed is decelerating. or just tap the gas verly lightly and give the stick a easly push to neutral and tada! there is always a point when you accelerate and let off that the gears do not completely touch and thats what you are creating.