ok so i've been working on a lightsaber project and i'm have it in two part to allow room for the electronics. i used the inventor program with the 3d thread tool add on to make the screw thread. i printed my parts and the threads are almost right they are 1/16th off. i've tried editing the extruded parts by making them 1/16 thicker but then the 3d threading tool wouldn't work. anyone got any ideas?