1999 Mitsubishi Montero steering wheel

Hi sir, I have a 1999 mit. Montero sport. The other day I changed the front sway bar end bushings and sway bar bushings in the rear.

now that I try to back up the vehicle from my drive way. As I turn the steering wheel to the right side. The steering wheels kind of tight to steer for a moment then it went away. I repeated it again it does the samething. I appreciated if you can tell me of what wrong with it.