I noticed in every office key checker, there seems to be some variation on PID. If I check a Windows 7 OEM Key the last 5 digits are always the same for that key. I check Pro Plus VL KMS key using a key checker I made and several others. The last 5 digits of an office key are different every single time. I noticed that when checking the registry when adding a Office key using office setup, it always has varying last 5 digits. I am also not sure of what the first 5 digits of the PID are supposed to be as most show them as XXXXX or they use a modded 7 checker that adds 55041 to it. Everytime I check the registry office PID starts with 82503 even though it is different in the apps info page and different for apps/suites.