Torpedo draw issues

[BigCat]

So I was smoking a CI legends red label this evening while finishing up a little work. As an aside, I found it to be a really nice smoke. It was my first in the legends series and it was a really consistent, creamy smoke. The type of cigar you can enjoy when you can't focus completely on the cigar. I recommend it.

Back to the point of this post though. It started off with a really nice draw - lots of thick smoke. Then about 1/3 into it, the draw started to tighten up. As I massaged the cigar to get it to open back up again, which it did, it occurred to me that this happens regularly when I smoke torpedos, which isn't all that often. I find that I have to massage the end to get it to open up after a little while. I had to do this several times as I took it down to the nub. Anyone else experience this? Any idea why? My sticks are stored at 65% and this one had been sitting for a couple of months. I only notice it with torpedos. I assume it has something to do with the heat causing the stick to expand a little, which affects a tapered end more than a regular end, but that could be completely off base. I'm curious more than anything.