I have a 20 inch 2.16 C2D iMac with 2 GIG of RAM (2 x 1 gig) and a 17 inch 1.83 CD iMac that has the stock 512 RAM (1 x 512) Will have any issues if remove 1 of the 1 gig RAM modules from the 20 inch model and replace it with a 2 gig module from OWC. Then take the "leftover" 1 gig module and install it in the 17 inch iMac. Any issues??? I thought I had read something about using mathed pairs in the Intel iMacs. Thanks!