I also believe that Sickle's New Brigade had to have lost flags. Also the 5th-6th-7th-8th New Jersey has well. I wish there was more detailed information on this battle.
I was very happy that somebody else knows the truth that Custer did not captured the 5th North Carolina's flag. Seems like he was handed the flag to take to Headquarters and his story changed by the time he got there. lol. Just fuels my fire to find more Custer flags.
Have a good evening,