Long story short, my 13 year old son is looking to start shooting IDPA this year. He has been shooting local steel matches with me for about a year and a half (videos if anyone is interested on my you tube channel "odebediah") and does fairly well for his age and experience. He has been shooting a Browning buckmark till this point, but last year in the fall I bought him a M&P Pro in 9mm to practice with to transition from his buckmark. He hasn't shot any matches with it yet but in practice he shoots the M&P very well free style and strong hand only with zero issues but struggles with his support hand. He gets accurate hits at 7-10 yards but is unable to get reliable function..."stove pipes". Now I realize the issue, but everything I've tried has not helped. I'm an average shooter at best and certainly no instructor but have been trying to do my best as "dad". Looking for help from someone that has worked with smaller stature folks with this same issue.