Batter running on dropped third strike

[PABlue]

So guys I have a question for you, how many years has it been since it has been legal for a batter to run to first on a missed third strike call? Or was it ever legal at anytime for the 12 and under age groups.I have been trying to remember back to my LL years (over 33 years ago ) if we were able to run on a dropped third stike and I can not recall being able to do so.
I had went to watch my son play a Cal Ripken game the other night and they did not have a base umpire. I was asked by both coaches if I would volunteer.I said yes and that's where it all went down hill. I found out after the game they got the home plate umpire to come from the bar to do the game.
The coach for the opposing team first arguing that it was perfectly legal to run on a dropped third strike ,then when they would not believe me that it was aganist the rules the coach pulls out his rule book and says "See right here it says so." He was showing me the full OBR rule on running on dropped third strike. I agree and tell him,"That is correct coach but if you'll look here it also says that the batter can not run if first base is occupied with less then two outs." He wanted to argue that also by saying his runner was stealing second so first was not occupied even though his runner couldn't leave the base till the ball reached the batter. I am almost ready to say I wish it was Fed season again but Legion ball is coming with maybe a small return to sanity.