Jumps much better that way. I run the rear wing with just a little vertical guerney. When you move it forward the front edge goes over the rear tower so you either need to remove a little for where the tips of the tower want to stick through like Ellis
http://www.oople.com/rc/photos/south.../NO5E1308.html , or cut out a section of the front wing like I do
http://www.oople.com/rc/photos/south.../NO5E1237.html
What speedo/motor you oing to run?