As Kirk mentioned, very dry tobacco can tend to burn hot. Maybe remoisturize what you have and see if that helps. Just put the tobacco in a tupperware or bowl and drape a moist paper towel over it. It should be fairly moist within 24 hours.
Also, if you really puff hard, it will heat up pretty quickly, Maybe take smaller puffs and see if that helps. Keeping the temperature down takes practice, but really pays off both in taste and avoiding tongue bite. I try to smoke with as little smoke as possible coming out.That naturally keeps me from really hauling on the pipe. That area where it feels like its hardly lit is where I find the most nuance in flavors.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.