I haven't used a Boge Carto in some time now or a filler carto at all, and still have a ton of the originals in stock of the 2.8-3ohm. However, I wonder if its not one of two things that has happened, either they got new machinery that is specked out slightly different in how there making them so the final product is slightly different, or if they subbed out the work to another plant who either has different machinery or just isnt doing as good of a job. Something obviously has changed here in the original Boge Carto's.