Sometimes LGM receives HUGE CAD files which make things run a lot slower and make it harder for us to help you get things done quickly. Remember that the printers are effectively running at an effective 150 dpi. The tiny triangles that make up a lot of the surfaces will not resolve in the final model. Please reduce your part's triangle count before sending it to us. (Please post if you can help provide direction on how to do this in Maya) It is very rare that any model needs more than 2 million polygons or approximately 40mb as a VRML.