Trouble Printing with Hatches

If I print one of my drawings out of MicroStation V8i to a pdf with a hatch in the drawing (road hatch) then the pdf size is extremely large. If I turn the hatch layer off and print in the exact same way that I printed before, then the pdf size is normal. To give an exact example, with the road hatch on a pdf is 21,033KB, with it off it is 250KB. I am having an extremely hard time viewing and sharing the large pdfs. Do you know of a fix? Also, how would you suggest sharing large job pdf files? Dochub? Drive?