Have any of you 5- or 6-string bass players used a Kahler bass tremolo? I want to know if Kahler's 5- and 6-string tremolos work as advertised and if any major problems (bridge breakage, string breakage) occur. I own a fretted 6-string bass and may purchase a fretless 6-string. After I do or do not purchase the fretless, I will buy a Kahler bass tremolo and install it in the spring or early summer. Best-laid plans, and all that.