I just completed building a tabletop slab roller from plans originally published in "Getting Into Pots: A basic pottery manual" by George Wettlaufer, and later in Ceramics Monthly (Feb. 1977). After extensive adjustments and fine-tuning of the cables, the slab roller just doesn't seem to function properly - I haven't even rolled a slab yet because it doesn't seem ready.   As others have mentioned, the incoming and outgoing cables tend to get hung up on each other. In addition, as the baseboard