maybe too much sugar in your rub?.......i know i have had butts with barq so hard, took a jackhammer to break it
also........too MUCH smoke flavor?.........i have NEVER had that problem.....i love smoke flavor, but that is me.........some don't like a heavy smoke flavor......but i also use apple wood for my smoke flavoring on ribs........maybe you used a wood that was too bitter, when it got heavy, like mesquite will do
like i said earlier........maybe back off to a 2-2-1 smoke...........i do that now
i also cook mine at 250........spray after one hour with aj and spiced rum then spray when i foil, i don't wrap in saran wrap, just str8 foil........2 hours in foil, then one hour to firm up.........jeff's rub..........this is in a ecb gourmet.........i suspect myself, too tuff a barq from the rub......maybe cut back on the sugar abit...........just a thought
hth