I'm restoring a 1978 Delta 37-315 8" Jointer, and am not sure how the Infeed/Outfeed Tables come off. I can loosen the gibs and see if the threaded height adjustment shafts come off. But before I do anything, I'd like to hear from someone who has done this in case there's something I ought to be doing. Both tables are held to the base with a dovetail arrangement and the gibs apply pressure to one side only. The manual isn't much help. Thanks.