Not a noob to the game but had a question about needle size. Ive always used 22 by 1.5 injecting into ass. I currently have only 23 by 1 needles. My question was is that ok to use on the ass? Im only 5'9" 150lbs. Not sure on % body fat but not fat at all. Would that be ok to use or should i get some 1.5?