I recently bought the 20 inch iMac (customised with 256MB X1600 and 2GB RAM) off the online Apple Store, and after using if for a few days, I want to send it back. However on my order status under Returns, it says that I can't send it back, but it doesn't state why other than "Item not eligible for return". I've read suggestions that you can't return custom iMacs, but nowhere in the Apple Store's T&C does it state that you can't return custom hardware. I'm also still in the 14 day timeframe for returning products. So, can anyone help me out here?