3DS Model fixing

I would like to make a fix to the polygons on the model the model was done on 3DS MAX , I need the job as soon as possible. It will be rewarded to the fastest delivery. The model has overlapping triangles and intersections that I need to get red off, as well as lowering the triangles count when exporting to STL, I need to thicken the structure as well to be about 2 mm. I need the job to finish tonight. I need the original .MAX file and to be exported as STL file as well. \r\n\r\nFile is attached.