I have a file that says it has non manifold segments, I tried all the fixes within the program but I don't know if it's an issue with the file (emailed the creator) but just looking at the model it seems to slice the worst in simplify3d.
I've got a print that doesn't want to stick (that's not the issue by the way) so I'm printing a brim with two layers for a more solid connection both to the side wall and the bed. The first layer's brim prints at the same nice slow speed as I have set for my first layer. The second layer's geometry ...