Rajul, I just took the remains of one of my less fortunate UCD's off my "wall of shame" and took some measurements. With the hor. stab off, looking at the plane with the engine to the front, I measured from the outside of the fuse in to the vertical stab where its glued in. On the right its 5/16" and on the left its 3/8" that would set the vert. stab with a slight right angle. Its 1/16 off on a distance of 4 1/2" (vert. stab.) Lets here from a math wiz for the degree of angle with those specs. Joe