Hot Start Problem
Just got home from a night of Tail-gaiting, what a load of fun! During the night I had to move my Jeep maybe 15 times, and it never cooled off. Each time, the starter sounded like absolute crap on a stick. It would turn slow-fast-slow, then finally crank. After the football game, after it had cooled all the way, it started perfectly. No sounds, no problems.
I don't think it is the battery, it is a 6 month old Optima. The voltage is fine on the guage.
The starter is about 3 months old. I had a problem with the bolts loosening due to vibration, but some blue Loc-Tite fixed it.