I was the same way when I started my injection protocol. my Dr. wanted me to use a 21G 1 1/2 inch I said hell no! so for the 1st 3 months I was using 25G 5/8" on my shoulder. My Dr. said that 5/8 wasn't long enough on the shoulder that I should use 1", which I never did. I use 25G 1" on my leg...