I have over forty of Daves Models and this by far was one of my favorites. My only problem that i encountered with any that i have built so far was with this particular model. The scale of the first floor walls was slightly off when i printed them. I double checked the all and reprinted them only to encounter the same problem when all the pages were printed at the same scale. I made it work however i had to remove about .9mm from the end of length walls and about .6mm from the width walls to make it work. Despite the user correction i had to make this is still one of my favorites.