Thanks for the suggestions. I will be trying BHT soon. I'm not looking for a replacement, but smokes that are similar that would provide avenues into other flavor profiles.
I'm not one to smoke a tobacco once and give up on it. I open a tin, quickly contain at least an oz if not more and seal it for the cellar (4 oz. mason jars). I smoke the rest. My plan is to keep a sample of smokes I've tried for one year and see if that changes the profile to my tastes. I know that cracking the factory seal will change it somewhat, but not enough for me to care. It's exposure to air is minimal.
Now that I have a few that I enjoy, I'm going to cellar the whole tin. Buy five, smoke one.