I just added a Tremel-No to one of my Custom 24's! I had held onto the device for about a month, worried about the install. Turns out it was a piece of cake! Now, I can jump from one tuning to another with no problems. I was skeptical about claims of added sustain, but it really did make a noticeable difference for me. It is so cool to go from hardtail to floating trem anytime I like.