I don't know how the Saito 1.20 compares to my OS 1.08 weightwise; but I have 3oz of dead weight in the tail of my Ultimate to balance her out. I am seriously thinking about relocating the servos and putting two elevator servos in the rear. Taking out the big pushrod, adding the weight of servos, mounting blocks and everything rearranged and I figure it will come out just right and be 3oz lighter overall.