o gauge atlas turntable

I may have already posted something about this and just forgot, or maybe I posted it in a different forum,But I bought a new turntable from Atlas,it did not work, something broken on the inside I guess,ordered another new one,I was broken,Called Atlas to inquier "whats up" ?Ofcourse they just...

I'm having a problem with the Atlas O-gauge Turntable. The belt very quickly slips off the pulley when running in one direction. :( Has anyone else had this problem and if so, can they please advise me what they did to correct it. Thanks, Norm Schreck