Yamaha kx5 pitch wheel instead ribbon controller

I bought a ancient Yamaha kx-5 midi keyboard and i don’t like the ribbon controller and want to change it into a pitch wheel.
Any idea if it’s possible and how to do it. I guess it is possible if you look at an old video from a program called “rock school” where Jan Hammer demonstrates his Fairlight and playing along with his modded KX-5.
Thanks in advance,

The pitch ribbon is essentially a 100K linear potentiometer. You could disconnect it, wire in a 100KB pot, and have exactly the same control from the pot.

Sorry for not responding sooner,i am sick. But thanks for your answer.

Jan Hammer and Chick Corea did the job in a different way . .