I'm having issues getting y software to translate my STL correctly. Everything looks fine until I get the print preview and I see that parts are missing. Any ideas on how I can fix this? http://s27.postimg.org/ceq97jxgj/Screen_Shot_2016_01_10_at_9_51_32_AM_2.png http://s8.postimg.org/peq8wo6qt/Scree...