I have been trying to fix this issue where when I print a model in Cura on my Monoprice select mini pro, the base of it is curved and doesn't print the item from the first layer. I have printed the same model in simplify3D and it prints perfectly flat on the bed. The first photo is from Cura and the second is from Simplify3D. I'm guessing I'm missing a setting in Cura but I have not been able to find an article relating to this issue.