Maybe it's just me, but I've always found the CG range on Sig plans to be forward of where I want it. The example I remember most clearly is the MidStar 40 (a fun plane!). With the CG near where they recommended it flew very comfortably but wouldn't snap-roll or spin (even with enlarged ailerons and rudder). Took some weight out of the nose and it got a lot more exciting. On the Kadet Senior, a CG in the recommended range made it sort of unpleasant to land, and a Kadet Senior shouldn't be unpleasant in any way (though adding ailerons helps make the turns look better).