objects distort when you move them

[InstantRocker]

I appreciate this great work.Imported models work fine when I adjusted imported mmd motion but when I moved imported models, they distorts.
I can correctly move when I import a model with "import only non dynamics rigid bodies" option checked, but when you unchecked it or when you apply some costraint(like dumped track) to bones, it distorts.
Does anyone know how I can solve the problem?
Thanks.