I got an Alpine Archery Micro for my young son to learn with. It is adjustable from 21" to 28" draw length. He needs it set at 22" and I'm thinking that I could sight it in for him by setting it at 28" and shooting it myself. I'm having trouble envisioning this in my mind, so maybe somebody can help clear it up. By moving from 22" to 28", the peep sight will move back further and up slightly. So, if I set the pins for me and then adjust it back to 22", he should be shooting low with that setting, right? But the left-to-right should be close to the same, I would think. I've never tried to teach an inexperienced person to shoot while, at the same time, helping them sight it in. Any tips in that regard would be appreciated.