How long have you had your Heartfelt beads? Here is a theory I will throw out there, which I believe was a contributing factor for me getting the ash taste.
If you only recently got your beads, your humidor may be at 65%, but your cigars may still be at a much lower RH. It could take months for them to absorb the moisture, and be at the equal RH of your humidor.
My thinking of why this happens, and was happening to me, is this combination...
- my newb draw, of sucking a golf ball through a garden hose.
- a dry cigar, which would burn hotter.
-dry tobacco that would create more space in the filler, as the tobacco on the interior has shrunk. It would then allow ash to pass through to the head, especially with larger ring gauges.
-the wrapper being the first part of a cigar to begin to absorb moisture, causing it to expand, creating more space for ash to move freely from front to back.
Explains why cutting more of the cap off helps, as the cap gets damp from touching your mouth, and collects ash.
Just my theory, and I don't have it happen to me anymore. My cigars sat a while without being at proper humidity, until I bought a proper hygrometer, and humidification device. They have been at proper RH for months now, and I don't get the ash taste.