I have always used a rear screen on my Talon. Does the rear window keep the dust out any better than the screen? I also use an OEM full windshield with vents.
I have a half windshield and am planning on getting the full window for the back, I hope that will keep more dust away from the interior of the machine. But likely dust will come in below the doors, so I may have to get the lower door inserts too!