So i've been trying to fix this all day long. My brain is about to explode. Decided to get some help here... Basically.. Tekkit restrict blocks mk2 dupes with block breakers in griefprevention claims. But when I do it in wilderness, the dupe works? I've tried to add mk2's to blockbreakers blacklist and it won't work. If someone could please explain this or knows of a fix i would be so happy! Thank you very much!