I've always said good things about Sperzels, but I just had one die on me. The pin doesn't grab the high E string tight enough to hold it through tuning.
I pulled the screw out and the little pin in there is definitely going all the way through, and since it only has one moving part I'm at a loss as to how to fix it. I emailed Sperzel for a single, but just in case - anyone swap Sperzels with Schallers before? If I'm going to have to buy 6 new ones, they aren't going to be ones that broke on me.
loop the string through 2 times. then lock.