The Thymlos Educator called me and said I was giving myself injections the correct way by moving the pen into the priming mode from zero. The specialty pharmacist had told me the same thing. I Inject when it turns back to 80. That was the priming mode for my pen. So, I have been doing everything correctly. The pen never goes past zero. So, good, I have been doing it correctly since I got the pen. I did read the warnings. But the study only used mice for two years as they were growing up. The study was so flawed, I am really not worried about getting cancer or any of the other side effects. Time will tell, I guess.