Heater problem help please??

I just got a 95 hyundai accent. There was a CD player in the dash I had a better one so I took it out. Put dash part back in but now the levers on my heater that you move to determine heat, vent, etc. no longer go side to side anymore. It's like they are stuck. So I'm wondering if it is just a cable problem and maybe the cable is stuck or something. Any info greatly appreciated.

probably a cable problem. the vents are mechanicaly operated so the problem is most likely physical. something in the way or jamming them up. take a look under the dash at the cables see if their hung up on anything could be a wire wrapped around them or something