hi all

i have an2007 kawasaki ultra 250X, my steering cable broke down once, so i ordered me and my bodies removed the old one installed the newones with new rings and o rings washers and everything in the back, now my steering is very smooth when im going 15 to 20 MPH but when i go over 20mph it gets so hard that im not even able to turn, anybody has any idea what can be wrong?

thanks in advance.