Ncloth constrained coners with passive collider - help

[s-b]

I'm trying to get the ball to have less mass so the ncloth doesn't move so much, the ball is a passive collider with gravity affecting it. I can't seem to change mass so it gently floats on the ncloth. I have gone through all the menus, can anyone help ?
I can't seem to change the elasticity of the ncloth either

http://www.youtube.com/watch?v=G6rnIDrLcCI

[thnkr]

This is much easier if you make the ball an nCloth object too, and assign a preset like concrete.