They have indeed, at least temporarily. I understand that Dean Markley flatwounds use roughly 75% more raw metal material and take much longer to make than their roundwound strings, but the demand hasn't been enough to keep up production at their American Winding factory. I'm not an employee of DMS-but I do have some connections(I've designed some packages, promotions and ads for them)- and I could try to scrounge up some samples for you(or anyone) to try out and evaluate if you want to send me a PM. I think if enough players responded positively that they may make them again. My experience with them is little and long ago, but I recall them stacking up well against other flatwounds I've been rocking lately: DR Hi-Beams and D'Addario Chromes.