This is harder than I thought.....

I want to have a sphere push through an intestinal looking tube. The sphere is larger than the diameter of the tube so it will stretch the edges as it moves through.

Right now I have the tube as a soft body and the sphere as a rigid body and "make collide" selected.

The problem is the sphere appears through the outside of the tube as it moves. and the tube acts buggy when they collide.

I want the sphere to be LOCKED inside the tube but stretching the walls or skin of it.

like a large rubber ball pushing it's way through a thin rubber hose.

I hope this makes sense.

thanks in advance!