Fun With FantaMorph

Hi there, I am having an issue with FantaMorph Pro 5.4.2. I am trying to create morphs with different amounts of each image in them (e.g. 30% of image 1 and 70% of image 2). However I've noticed that FantaMorph seems to weight image 2 more heavily in the morph (i.e. at 50% the morphed image more clo...