I go quads and delts too. Just rotate. I heat my gear a little with hot water, and use a 25g to pin. Its painless.
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Currently pinning eod using mostly quads, delts because wife isn't always there to help with glutes. I use a 25g and just heat it up a little with hot water so it will go through. Virtually painless. I go high and a little to the outside on the quads. I put the heel of my hand on my hip bone and...