how about setting the 800 DE up with a slightly higher tension than the factory one? 1 to 2 lbs higher. I am sure there would not be much loss of sweetspot, and the power gap between the OF and DE might be reduced.
Tip for next time: http://www.badmintonforum.com/vb/announcement.php?f=4&announcementid=3 I just helped you here: http://www.badmintonforum.com/vb/search.php?searchid=57256&pp=25&page=2 Just so you know: http://www.badmintonforum.com/vb/showthread.php?t=12569&highlight=string+tension
