I have had drums with so much nicotine on them...that, after removing all lugs etc,and spraying Windex on them.....a dark yellow stream came running down the sides of them!...Always a good sign!..Then,of course,drums were much closer to original finish then..much brighter...
I had a set once..where I swear there was a 1/16" coating of nicotine on everything!..Cymbals too!..YUK!