Yes, as you are discovering they will reveal any small upstream changes, my pair let me know when my cartridge was slightly misaligned. Some albums just have mushy bass, I was listening to Bonnie Raitt the other day and the sound was bloated and tubby compared to other better recorded music. I also noticed the Sony Sony XDR-F1HD digital tuner has a sound of it's own with slightly over ripe mid-bass while my DAC and turntable has tuneful tight bass, so if the mushy bass continues then it could be your source too.
The lead shot will help with the mushy bass, you can also fine tune the sound by adding more Dacron or Kapok stuffing in the middle and lower chambers.
I happily listened to mine for a year before installing internal braces which really tightened up the bass and improved imaging, though I understand not everybody feels comfortable tearing into their new speakers.
Please keep us updated on your impressions.
And yes, without pics they don't exist.
Wayne