vent cables, still not right grrrrrrr Options

[hndyhrr]

Installed ventilation controls. Hooked up top black knob cable to drive side box in front trunk. !@#$%^&*()_ won't slide all the way to the passenger side. I have adjusted and adjusted and it still won't go. Funny thing without clamp that holds cable in place it slides ok. WTF am I doing wrong??????

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[hndyhrr]

I have only hooked up one cable thus far. The one controlled by top black knob. It is routed correctly and clip is installed correct. Clip only goes on one way and cable is seated in groove. When I move knob to the open position, knob only goes almost to the first fan setting and then stops. When I take that clip off the knob will move all the way to the right side.
With clip on and knob at first fan setting the flaps inside ( not sure of name) flapper box (not under car but in front trunk) are in the correct position (closed/open). When I connected cables to the controls I used a pic of where the casing should be clamped.
I am truly stumped.

Thank you for you time. It is appreciated.

Renee