One could say, I have long lean basketball player type legs. I use 23 gauge pin. I don't think I can go thinner gauage than this, right ? Is there a really good " how to" video maybe on YouTube you know of, cause sometimes I think I'm straying to the wrong area when inserting pin in the leg. I need to see a really specific & detailed video . it would be most helpful to me. Any links provided will be appreciated. Thank you!