On occasion I have had mine not rotate after starting the motor. I did find that the sleeve inside the KK for some reason seemed to be stuck so now I make sure it is free to turn. Just put the shaft in and turn it by hand to see if the sleeve turns when you turn the shaft. You will also see how far that shaft must go in for the rotisserie to work. There doesn't appear to be a lot of leeway so things need to be snug. Hope this helps some. You might want to do the same thing with the rod before you load it, just make sure that sleeve turns.