You would likely be much better off using the PCL driver in the case of any CAD application. For multiple reasons.
PS code is better for color, PCL for accuracy, PCL.
Transparencies are truly misunderstood in printing, the printer knows there is something there, typically it will try to print it, so most often you would get a dark spot in its place, in Postscript applications, there is often a Transparency flattener, with PDF, they developed the pdf/x format, which is designed for print and therefore doesn't send it to the printer. Then there is Composite Overprint which often can push the transparency to the bottom layer where it won't affect t anything.
So the easiest method is likely to switch to PCL for CAD applications, then you have the Export to pdf and print from acrobat option assuming it shows up in Acrobat ok (I've seen lots that don't)
Then there is shot - in - the - dark try until you find one that works options in the driver. These specific ones is where I would start.
As for the CAD software, my experience with that ended really in about 2001 ;-) . Some of them use PPD's as well, if that is the case, make sure it is loaded in the application.