Had my FF starter rebuilt. If yours is not on the list of things to take care of, add it, cause it is on the list of "soon to fail". I caught mine before it reached the top of the list. The starters have 4 brushes. Mine came out in 7 pieces and only about 1/4 in long. The rebuilder put in new bushings, clutch and gear and a new solenoid plus painted it to look new. I have yet to try it to see if that takes care of the no crank when warm issue, but this wkend will be the test.
Mark