To over simplify it, the harmful chemicals such as tar, carbon monoxide, nitrogen oxide, formaldehyde and ammonia (to name only a few), dont actually exist in the herb itself
The heel is remaining "smooth" and I'm completely ok with that, starting to believe that a full caked pipes are a myth (or maybe possible with some specific tobaccos or smoking technique)
Often this can be about trial and error, but if you are regularly seeing differences in humidity, I highly recommend seeking the advice of the tobacconist you purchased your humidor and accessories from
To the elegantly designed study, adorned with hardwood furniture and shelves full of old books
If you think you have an abscess in the back of your throat, you need to see a doctor