i know how to fix stuff like that...
If you are the op, go into game rules,
Then, you will see something like "Enguage Height" set that to zero,
And you may find the Enguage distance and Enguage Rotation are out of wack to so set the enguage distance for 80 (If your are doing judo) and the Enguage Rotation to 0 (If you dont want to backflip ukes had off...)
Hope this helped!