I have recent purchased a Panasonic SD 257 bread maker. I have no problems (so far) with the bread I am making but am wondering about the performance of the machine. During the kneading process the paddle stops and starts. There is no particular pattern in the timing of this and I am not sure if this is suppose to happen or the machine has a problem. My previous Breville bread maker continually kneaded with no stopping until the 'rise' program. Any help would be greatly appreciated.