tremelo

Hi, don't know really where to post this so ill try the general section, im contemplating having a Kahler Bass Tremolo fitted to my Warwick Infinity, pictured below: I'm just wondering if 1st anyone could give me a couple of sources for as to where i could buy a tremolo and...

Does anyone have, had, or know sombody who has a bass with a kahler treme. I have heard that bass tremelos go out of tune way too easly. I would like to know what people who have had them before to give me their view.