Hi there and welcome!
So I put the video on 1.75x speed and listen to it while doing some other stuff.
I am 100% sure I know your issue.
The video instructs you to put the temp probe into the thick Point muscle and this is not a good spot no matter what they say lol.
The best spot is the thickest yet center-most portion of the FLAT muscle because the FLAT takes way longer to come up to temp and get tender.
Temp probe placement in a brisket is crazy difficult to get correct AND the Point will full you more than any other part since it is hard to mess up and comes up to temp faster and gets tender faster due to the fat content where the FLAT is less fatty and takes longer to come up to temp and get tender.
So what is happening to you is that the POINT is hitting their magic number faster in some cases versus others which causes you to wrap and pull the brisket before the Flat is done AND also has you wrapping earlier which causes less bark. So two symptoms indicating that the probe temp reading is your problem.
Heads up though. I use 3 temp probes to aim for the thickest center-most portion of the FLAT from different angles because I usually only get 1 of the 3 correct. I go with the one that reads the lowest.
Now as
1MoreFord
mentioned, a brisket is ONLY done when it is tender. Never by time or temp. You use the temp to tell you when to check for tenderness.
You check for tenderness by stabbing ALL OVER with a kabob skewer and when it goes in with no resistance ALL OVER then it is tender and therefore done.
So 2 things to fix your briskets.
1. Put the temp probe into the thickest center-most part of the FLAT muscle
2. Start checking for tenderness when the probe reads about 200F by stabbing all over with a kabob skewer or something like that. If it goes in ALL OVER without resistance then it is tender and ready. If resistance anywhere then let temp raise a couple of degrees and test for tenderness again. Repeat until tendr
Honorable Mention: wait to wrap at 180F degrees and you will get better flavor and bark. I do my briskets naked the whole time and if you wrap too early you get more roast beef flavor vs bbq brisket flavor. The later you wait the better the flavor.
I hop ethis help s:)