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@SamFerrise and @Bullibe, getting the two blades professionally sharpened and may touch them up safely without the guard using Japanese chosera wetstones from the Apex.
@Firemanyz, thanks for the tip. Will look into Cabela's as well. The school this came out of gunked it up with the Pam you mentioned. Guy I bought it from removed most of it, slides real smooth. Depth knob is decent and will probably improve when I break it down, degrease, and lubricate. The worm screw and gears underneath are caked with Pam.