DFS replication woes

I have two Server 2008 servers and I am replicating two folders.

Server One has FOLDERA and the root of D:

I am replicating to Server Two.

So, in DFS MGT, it reads like this:

Local Path:
d:\foldera
e:\foldera

That's the first replication group.  Here's the second group:

Local Path:
d:\shares
d:

What fails in my testing is when I try to test propagation from d:\shares to d:\

I'm thinking (because I read somewhere) that it's the root that's killing me.  

Anyone have any thoughts on what I can do?  I debated changing my local path to d:\*.* but i'm not sure that would help.

Thoughts?

thanks

Cliff