I am new to DesignSpark Mechanical and looking for help, I import a model from Tinkercad, the model is completely done but upon 3D print the dome turns out like a disco ball and the circles are line segments. It resulted in countless hours of filing and sanding. I want to do another 3D print, but is there a way to import the file and improve on those things? Also there are a number of fine details I don't need (remnants from my inadequate 3D modeling capabilities). Thank you so much.