I am trying to add my model to a drawing file that we imported from AutoCAD. It worked for a while, but then the Titleblock starting exploding when I added some models. My supervisor and I think it is a scaling thing, but do not know how to change it to where it doesn't "explode". If someone has run into this before, or hasn't, and can help it would be much appreciated.

The attached file is a screen shot of the aftermath when I added the model.