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Not sure if this is where I need to post, if not my bad. Let me 1st say I am not insinuating anything about AOL, just have some questions. Anyone else get a hard lump at injection site, slight reddish. Most recent pin is even worse, and actually sore. Many years of doing this and this is a first. I swap pin locations, all the basic stuff, quit mixing blends and went to just 1 blend same outcome. I would understand if I screwed up once but this has been on for weeks now. Just wondering if there should be concern for anything