You might find some discussion in the lengthy thread linked in my signature below...
If your Flea or Fluke has a plastic fretboard, you cannot use a metal-wound string and need to use a plain, usually fluoro string for the low-G, otherwise the metal windings will chew up the plastic 'frets' on the plastic fretboard rather quickly...MFC strongly advises AGAINST all wound strings unless your instrument has the wooden fretboard and metal frets upgrade.