modal analysis

I am trying to do a modal analysis of individual leaf mounts for transmission as well as assembly, where I have included the weight of the motor and differential at their respective cg. I connected the conm2 using an rbe3 element to their respective mountings on the leaf mounts and also created rbe2 elements at the holes where the mounts will be attached to the chassis and assigned a SPC there. I used the EIGRL card and gave nd as 20 and have not given a frequency range. But the issue I am facing is that I am not getting any rigid modes, which I should be getting six of. I am sure I have appropriately constrained all my models. Can anyone help me figure out where I could be wrong or missing something.

please