Looks like BttF 2 & 3 are fairly F'ed up.
Click on the link below, towards the top of the screen click on the English version.
It appears #1 is OK, but 2 and 3 have matting problems. There is a long and on going thread over at the HTF in the software section if you want to read up on it more.
I bought my set today regardless. I just wanted #1. If a fix comes later, great, if not....oh well.