The 3D telat on the back of the TT and CT is not stable. Moves...

[pmadisson75]

Hi.
Does anyone of you know which bone of the CT and TT models to connect the 3D inscription in MilkShape?
The problem is that every time after compiling, the inscription moves on the back of the TT and CT models.
I can't figure out which bone to connect the 3D text to... Each time the text moves...