Yeah Dead Space is pretty tough, I really wish they did 2 point calibration I can never get it to feel as good as HoTD: Overkill, it gets really creepy and scary and you panic and can't open do "perfect reloads"
Also if anyone is interested in getting this set up Slick Deals has a thread about a move sports bundle for 42 bucks
http://slickdeals.net/f/5161652-PS3-...hack?t=5161652