W900 c-12 cab noise

I have been driving a 2004 w900 daycab for the last month. It runs well, and drives well. I can really feel the engine in the cab. I changed engine and cab mounts. I have studied this arrangement and I can't figure out how the noise is transmitted. I have a pete 357 with a 3176 that sounds exactly the same and looks exactly the same and you can't feel or here it in the cab. The dealer sold me some orange uerathane engine mounts. I pulled rubber ones out. They were toast. Are the urethane mounts to stiff? Is there something in the cab mount area that could be the problem? I can't seem to figure out how, but it feels like the cab is to tight to the frame and the engine to tight to the frame. Thanks for any help. I really love this truck.

 

Thanks, that's what I thought. I asked the dealer if they had rubber ones. They told me they didn't. I wonder if that is another covid shortage or if my dealer just likes hard mounts.

 

Yes it did. I found the factory rubber ones. It made a huge difference.