I have 2 pairs of 5/8 and 1.25, and one pair 2.5 lb platemates. I have used 5/8 or 1.25 on just one end of the dumbell (sometimes it's easier to add 1.25 rather than 2 x 5/8). Whenever I only use one platemate per db, I just shift the way I hold the db -- closer to the end where the platemate...