DIY Book Scanner

When I have take all the photos and when Im about to split the pages in Scan Tailor. Scan Tailor does not "add up" the sides so I have do manually edit each side in a 300 page book it looks like just to be able to cut the sides correctly.
Even when I edit the first one and choose "change every page", it dont work. It dont set the split lines Exactly as the first one...


Can anyone help me with this, how do I fix this so I dont need to manually edit each page in the book?! :'(

What do you mean by "edit each side"?

This might be one of those cases where a picture is worth a 1000 words. A few photos/screenshots to illustrate the problem might make it more clear where the problem is.

Have you tried setting it to "manual" instead of "auto"?