Is anyone else having issues with the top layer being too thin? It seems to be thin for me even if I tell it 4 top layers? Could use some guidance. My kids love this model and I'm printing them for their classroom prizes when they earn enough points. I print at a .2 height and 3 perimeters. I have been telling cura 4 bottom and 4 top but the top still seems thin. Thanks for the improved links as the ones I have printed so far have survived my 3 year old for several days. He sleeps with flexy rex.