I'm woundering what the problems are in using a short needle. I've used insulin pins to inject into the glute because that was all I had and it seemed to work alright. ( I made sure to push fairly hard into the glute for as much penetration as I could get) I'm not in disagreement in what you say, I'm just woundering if I'm not getting the full benifit, if it takes longer to absorb, or if it's something different altogether that is the problem.