One of my cheapy guitars a LTD M-50 has been really acting up on me and not returning to zero (FR license pos). Fought with it for months adjusting everything soup to nuts, made sure knife edge's were ok and everything lubed etc etc I wnt through every youtube and tutorial I could find and the darn thing still would not dial in. I got close a few times only to find it would go sharp after a good reef on the bar.. I knew about trem stabilizers and so I researched it and said wtf why not? I'm not dropping 200+ dollars for a real FR on a guitar I rarely use that I paid 200 for. I bought the tremol-no for 50 bucks.. Install took me about 20 minutes and with some fidgeting and tweaking the trem returns perfectly to zero in full float, dive only, and stays in perfect tune in hard tail mode! I could drop a cinder block on the bar and it would probably return to zero perfectly. This thing is a godsend. Saved me a minimum of 150 dollars and mucho headaches.