im trying to desing a model of a tower to be able to print without support, but every time i slice it half of pilars missing,it makes model to fail durring print, to make them solid i need to turn model at least 15 degrees to the side but then i need to use support. One time model was sliced corectly right side up, but never after it. This is unacceptable, can you help? Spark Studio software works fine!!!

