HVAC Mode Door Control Knob stuck.

triangles

Test Drive
Location
Toledo, Ohio
So my mode door control knob is stuck on vent/floor. I've tried to trouble shoot myself, The climate control knob assembly seems to be in working order so I followed the cable down to where the mode door is and there is a bunch of plastic linkage I can't make heads nor tails of. I'm guessing something is jammed here but don't know how to figure out what it is and correct it. Any help would be greatly appreciated. FYI the workshop manual was of no help. It only had linkage adjustment information.
 

triangles

Test Drive
Location
Toledo, Ohio
Not sure what the problem was but I reached into the dash to "help" the linkage move while rotating the knob. Whatever was making it stick broke free and the door control knob functioned again. I simply lubed up the linkages and am putting it back together.
 
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