Gambler filter differences?

My wife and I use Gambler tube cut gold filters they work for us we like them, and have been using them to roll since last August. However, recently we have noticed that instead of the normal two ring filters we usually get we are getting the same exact box with the same exact markings and getting filters in those boxes with just one ring. These filters seem to be slightly lighter and it bugs the crap out of us. These are not the same filters as the two ring version, and they provide a slightly different lighter flavor. How can we be getting two different varieties of filter from the same box? Trust me we have to check the boxes ahead of time at the tobacco shop before we buy now. They do come from the same boxes. Can anyone shed any light on why?