Jeremy,

The plans show the CG range from the center of the front spar to 1 5/8" in front of that position. The Dust seems to fly best with the CG at the rear part of this range as the forward CG limit requires a lot of elevator for landing. The manual suggest a starting point of 100% expo for ailerons and about 60% for elevator. A good starting point is 3/8" up and down for ailerons throws and 1/4" for elevator. A forward CG should use 3/8" for elevator. The above info is from the manual or plans.

The manual also has you assemble the spars, ribs, leading edge, motor mount and trailing edge being held together with rubber bands. Make sure it is straight and glue with thin and medium CA. I used only CA glue except for fuel proofing and the fin tabs for more working time.

My first Dust balanced at the forward CG limit with a large engine and I did not have expo or dual rates at the time. 3/8" elevator was hardly enough for landing but more throw got very touchy at high speeds. Moving the CG back to just in front of the front spar and expo made things better.