I have a Woodmaster Drum Sander about 25 years old which I purchased used. I believe it needs new coverings for the two feed rollers but I do not know how to put it on. It is a coarse sandpaper. These rollers cannot be turned by hand so am wondering if there is a way to put the new sandpaper on without tearing the whole machine apart. Does anyone have this sander? Do you have a manual? I have called Woodmaster but they can't give me any information about it. I would appreciate any help you can give me.