Need help installing extra memory on a memory card.

[jgado@execpc.com (John Gado)]

I'm having some problems with an Apple IIGS memory expansion card 
that I'm hoping someone would be able to help me with.  I have an Apple 
IIGS memory card which came populated with 512K or RAM in the form of 
8 256x4 chips.  I've populated the rest of the card (3 more banks) 
with the same chips, and shorted the two jumpers on the card (J1 & J2).  
For some reason, when I go into the control panel to check the amount 
of RAM that I have, it tells me that I only have about 1.2 MB instead 
of the 2MB that I should have.   Am I doing something wrong?  Does this 
card only except 256x1 chips for the other 3 banks?  The memory card itself 
is an "Apple IIGS memory expansion" card, which is installed in a Apple IIGS 
with a 01 ROM, and no other cards.  Any help would be appreciated, thanks.
 
                                                                              
                                                       John.
-jgado@execpc.com