I would like to know whether the keys are fully illuminated and whether the upper case character is at the top of the key (as in the G810). I ask because in the G512 and G513 only the upper part (e.g. 1) of the character is illuminated, and the uppercase character is at the bottom of the key (e.g. +), so it becomes invisible! This is a huge flaw that would prevent me from using the keyboard.