I've recently converted a Washburn bass into a fretless bass. I was wondering about how the action. Approximately, how far should the strings be from the fretboard? I do not need perfect measurements, as my converted instrument is far from perfect. I just want to be able to get some fretless playing experience before I actually buy a fretless bass (which will likely be a while from now.) Thanks! Any other fretless 'setup' advice would be appreciated.