Changing the characters

When I created the characters for the Amazoon City Project I modelled the characters in different sizes unfortunately. I also set Morphs on the facial expressions on all the characters. When importing the characters to the animation mode the charcters has different sizes. I tried to scale them to the same size but the characters just scaled back again to the original scale again! This lead me to going back to the modeller and change the scales of the characters there. So when importing them into the layout mode they where the same size. But another problem came up instead. I wasnt aware of this until may 2006 about this. When using the morphs in the layout so the animation couøld be rendered. The Morphs exploded and became unusable. I found about this and was told that I could just scale back the characters in Modeler.