Problem with DFS connection across domains

[ingram59]

Please read CAREFULLY before replying. I tried to be concise in my testing description. I need this resolved and I've hit a dead end and need some recommendations.

I have two domains, A and B that have two-way transitive trusts. I need the computers in DomainA to connect to DFS shares in DomainB

OU1 and OU2 are at the same level and inheriting policies. OU2 has a sub-ou OU3

Both Computers and Users are in DomainA and DFS shares are in DomainB

I've done the following testing and CAN'T, for the life of me understand my users can't connect to DFS from the problematic OU. My testing was an attempt to rule out user rights and narrow it down to a GPO issue, but I still can't find the culprit. I ruled out USER rights issues by flipping users and computers.  Below is how everything played out.

User1 on Computer1 in OU1 (won't connect to DFS)

 

User2 on Computer1 in OU1 (won't connect to DFS)

User1 on Computer2 in OU1 (won't connect to DFS)

User2 on Computer2 in OU1 (won't connect to DFS)

User1 on Computer1 in OU2 (Connects to DFS)

User2 on Computer1 in OU2 (Connects to DFS)

User1 on Computer2 in OU2 (Connects to DFS)

User2 on Computer2 in OU2 (Connects to DFS)

User2 on Computer2 in OU3 with policy inheritance (Connects to DFS)

User2 on Computer2 in OU3 with BLOCKED inheritance and linked GPO's from OU1 (Connects to DFS)