I smoked a brisket for the first time yesterday. The flavor was great but it wasnt as tender as I would like. I cooked it at 230 degrees until internal temp was 190. It only took 6 hours for a 7lb brisket though. I wrapped it in foil for last couple of hours. Not sure what I did wrong but would it be possible to reheat in slow cooker for several hours to make it more tender?