Reshape Effect with Compound Paths/Shapes

Anyone have an idea how to use the reshape effect with with compound shapes? Essentially I have 3...let's call them "donuts"... with different inner and outer diameters. I need to morph the smallest to the middle size and the middle size to the largest in sequence. The inner and outer diameters scale at different rates (small very fat ring donut, to middle sized moderately fat ring donut, to large skinny ring donut). When I create the masks for these donuts, I get an inner and outer mask for each - but I can't use both masks in the reshape. I have to use either the inner diameter mask - which means my outer diameter doesn't scale correctly, or the outer diameter mask - which means my inner diameter doesn't scale correctly. I've tried everything I can think of and I'm stumped!