heres an idea
get this http://www3.towerhobbies.com/cgi-bin...LXHY62&P=Vand this http://www3.towerhobbies.com/cgi-bin...LXHY63&P=V
and you should have an adjustable (for prop sizes) balancer
and its not much more expensive than the handheld one
or you could just get a piece of wire, two wheel collars and do the same thing, although that may mess up your balance