I use a 22 guage 1.5 inch for injections and every time i have pinned so far i got a large welt that got red and hot. The first two weeks i went into the delts and got a rash on top of welts on both sides, so then i went into the glutes for the third week and the same thing. I read somewhere in this fourm that going deeper might prevent that. Is it possible that 1.5 inches in the glutes and 1 inch in the delts is not far enough? I also am wondering about going to a 23 guage?