RE: for those who still use butyrate dope
It's my understanding that lacquer thinner is the proper thinner for nitrate dope. (It's my understanding because that's what I use and it works, lol) The thinner for butyrate smells different and I don't believe lacquer thinner will work.
By the way, I buy my nitrate dope from Aircraft Spruce, too, and it's also made by Certified Coatings.