What is the best invisible thread? My Horizon's tension has a nervous breakdown with the stuff. I can do a sample piece and get the tension right. Then after FMQ for a little bit, it tangles and "eyelashes" like crazy. I've tried a couple different brands, Sulky is one of them. I use a cone holder to let the thread relax a bit before it gets to the machine. And I use a metalic needle with a large eye. Any help would be really appreciated.