I could never get the Kyser to work properly, Jerry. The spring tension, of course, is set at the factory. For me, it never had the right tension to hold the strings down properly. I had a 12-string and a 6-string version; the 6-string worked OK on my 6s, but the 12er just didn't cut muster. The Shubb you just kind of adjust initially and then you're done -- that thumbscrew design is very nice.