Were they enhanced with a solution when you bought them? What temp were you cooking at?
I usually apply my rub an hour or two before hitting the smoker.
Letting them sit overnight can sometimes give it a hammy flavor.
Shirley Fabrication 24X60 (For Sale)
Weber 22" OTG
"You have never lived until you have almost died". "For those who fight for it, life has a flavor the protected will never know".-Unknown Vietnam Soldier