You know, there are about a million possibilities. It depends on your code, so how about you
show us your code?. I'm sure we'd be able to help you then
If you can't because you are secretly working for the government or something, here are some issues you might want to take a look at.
1) Did you set the distance correctly? If you use vec_rotate, it might be worth trying to set the inverse value for the x-value of your vector. (i.e. instead of 200, set it to -200)
2) Do you even use vec_rotate or do you use sin and cos? If so, check if you made a mistake there!
3) Does the model face in the correct direction in MED?
