IFS mount directory and Windows Explorer

With all this talk of V5R4, I'm sorry but I need to go old school for 
a minute.  I'm running V5R2 on my 810.  I added some disk about a 
month ago to ASP3.  As a result I get another directory added 
under /dev called QASP03.  This directory is owned by QSYS just like 
the other two ASP directories QASP01 and QASP02.  I created a UDFS 
under QASP03 called MikeTest.UDFS which ,as a result, my ID owns.  I 
also created a directory off the root of the IFS called MikeTest which 
I own as well.  I mounted the MikeTest.UDFS to the MikeTest directory 
with the MOUNT command (MOUNT TYPE(*UDFS) MFS
('/dev/qasp03/MikeTest.UDFS') MNTOVERDIR('MikeTest').  That operation 
completes ok.  From my Windows XP machine, I open a Windows Explorer 
window, select a test directory on my C: drive by right clicking on it 
and select CUT.  In the same Windows Explorer window I navigate to my 
Q: drive which is mapped to the root of my IFS.  There is a Read/Write 
share to the root (only for the length of this test).  I click on the 
MikeTest folder on the left and nothing is displayed on the right.  In 
the right pane I right click and select PASTE.  The contents of the 
directory and its subdirectories are successfully pasted.
  I then right click in the left pane on the new subdirectory under 
MikeTest and select CUT.  In the same Window I try to paste to another 
directory off the root (MikeTest2 - Which my ID owns) I get access 
denied - Make sure disk isn't write protected, blah blah blah.
  I deleted the contents of my MikeTest folder (the mounted directory 
over the UDFS) and try cutting and pasting from my C: drive to the 
other directory, MikeTest2 and that works.  If I try to take the 
subdirectory I just pasted under MikeTest2 and paste it to MikeTest 
(mounted over UDFS), I get access denied.

Anyone else get this problem?

My ID has *ALLOBJ athority but I know in the IFS that might not be 
what is on OS/400 side.  The only directory that my ID doesn't own and 
thereby have explicit rights to is /dev which is *PUBLIC *RW with no 
Object authorities defined.

Thanks in advanced for any thoughts or experiences.

m.