Heres a few pictures that I just used a few spare parts to make. A steering servo horn, screw and a nut, and the ball end of the linkage. When changing a servo some of them are geared different so you may need to switch the servo reversing switch on your transmitter to get it steering in the right direction that you feel comfortable with. I hope this is the only problem you've been having
. If not take a pic if you can so I can get a better idea of what you need help with.