The landing gear wheels on the a320 i'm working on is wobbly. HELP

==========A LITTLE INTRO ==========
I have tested it countless times, then I had a significant positive progress when I decided to lower the fuel count. I realised that the landing gear legs and wheels wobbled because of the weight.
========== THE PROBLEM ===========
Now I have only >16% fuel on my a320, everything is okay, except for the gears. I loaded in, everything was stable. I accelerated, trying to takeoff from the runway, but the wheels tilted right and left as if I enabled it to rotate wherever. It screwed up my takeoff (and my landing was worse).
========= THE QUESTION ========
How do I stop the wheels from going left or right? I'm pretty sure I put 'NONE' on the turning angle. It shouldn't be turning freely. Help me :'(