Metal shim under motor mounts?

[Dave0803]

Does anyone know what the metal shim under each motor mount is there for? Is there any reason to replace it when changing out the mounts?

 

[wmburns]

Without pictures, the only metal shim I can think about is what I thought was a heat shield.

Pictures?

 

[Dave0803]

Yeah, your right. It is the heat shields. I found that out a little while ago. I just don't really see what those little sheilds would block.