I deleted registry as well as whole PPCkitchen folder and upon re-installation it still remembers all the crap oems I took out
EDIT: had to delete "ModuleDir=USER_OEM" from the "archive: path" in the BuildOS_config.text file... prob not a good thing to do but solved the issues of bad OEMs it remembered after I took them out...
EDIT: That wasnt a good move as it only worked temporary, so I dunno where it is being archived but it still remembers past crap