Lionel Coal Loader Problem

[rcsteamer]

I just purchased a new #397 Operating Coal Loader and the conveyer belt continually hesitates. The belt will turn for a few seconds, stop, and then rotate again. I do not see any coal particles that possibly could be stuck. The instructions suggest dusting the inside surface of the belt with talcum powder or cornstarch occasionally to prevent sticking. I have not tried this yet. Any suggestions[?][?]

Thanks, Sam