I've cooked probably 10 briskets on the smoker I built now in a year, and this is the first one that turned out kinda stringy/ pot roasty. I cooked on the bottom rack and didn't wrap the whole time. I put it on the rack as close as It could get to where the heat/smoke does a 180. I've tried wrapping in butcher paper after the stall and haven't been as happy with those results. Maybe I need to wrap at 180-190ish and see how that turns out.
As to cutting I always cut and separate the flat from the point, and cut the flat against the grain. The point I cut against the grain as well. I did notice when cutting the point the meat was stingy on the bottom, so it could have been due to the fact that it was partially against the grain? I know the grain patterns can sort of shift slightly as to what direction you think they run.
Here's the smoker
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