Barry,

I had this type of problem. I took the starter to a reputable
starter/alternator rebuilder and paid to have my starter serviced.  The
tech said that the starter "looked ok" a little thing here or there but
20k miles and two years later still flawless service.

I paid $70 Cdn, for this.  BTW my opinion is that if your basically
unhappy with the starter's RPM while cranking, or just don't trust it,
get another one.  If your basically happy with everything else about the
starter, consider having it serviced.

Sincerely,

Mark Keller
91 Carat
Cowichan Bay, B.C.