Decided to move to Android after continuous issues with my iPad. I purchased a Motorola Xoom. How ever, SIM card would not release from the slot so had no option to remove upper rear cover to remove SIM. Cover came off ok, but when trying refit it seems to rest on top of a hard object even though the guid slots are all lined up. It will not push down to allow securing. Anyone else had this is sure or even can someone provide some advice. Thanks in advance.