ive been using a 1.5 inch needle for quads, and going pretty much all the way in each time. Today i had some intense pain before i got all the way in so i stopped with about a half inch left and just injected there, so the needle was about 1 inch in. Did i inject far enough in? do you guys use 1.5 or 1 inch for quads?
also, what do you guys mean when you say "pip"


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lol?