I have a Doge and never had this issue with mine. Actually, I have an authentic and a clone, and neither has this issue. I have had the same
coils on mine for weeks (months?) and have changed the wicks several (or more) times. Today I changed the cotton on the clone and when I dry burned the
coils, I noticed that one was hotter than the other. Snugged the screws and both glowed brightly, but this was after several re-wicks, not after a few hits.
Unfortunately none of that really helps you - maybe someone will have an answer/fix for you.
Good luck.
