Yeah that sucks, I was gonna complain about my gym not having rubber plates bc the same thing happens to me when I use the round iron plates, they roll all over the place. But damn guess i cant say anything now, diamond plates has got to suck......I feel ya on the Romanian deads, i just stopped doing them bc they always felt akward to me, I just feel more comfortable with my hands inside my knees and I can go heavier and still keep good form.