I installed an 8x8 grid of these on a new Mojo blend stringjob at about 52/55#. A couple hours later, almost half of the string savers were gone. They were a pain to install, as they stuck together; installation required a convoluted, upwards jerking motion for each string saver. Totally not worth the meager savings compared to Babolat Elastrocross, which has no-gimmicks installation, and stay put in the stringbed. I know I should probably man up and just keep paying for the Babolat stuff, but I'm still looking for the cheapest way out. How are the Gamma string savers or the String Eyes listed on TW? What about the string savers from Klipper?