Check the voltage at the battery posts during a hot cranking attempt. If the battery is the problem, the terminal voltage will drop WAY down, like below 9 volts. If it's in the 9.5-10 volt range or above and the starter is cranking slow, you probably have starter problems.

Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!