Not another starting thread

Lately the good old 05 manual transmission rx8 (107,000m) has been taking a few extra cranks when hot. Its not every time. For example if the car sits for 60 seconds or less it starts just fine. If it sits hot for about 5 minutes, it takes 3-4 seconds to start. I would think that a hot start is a hot start no matter if it's 1 or 5 minutes after the engine was shut off. Any thoughts?



PS

Battery just replaced,

Thinking about replacing the stock starter this weekend.