| An owner of a new 996R on the Ducati List was experiencing similar behavior and was able to sort it by replacing the starter and battery cables with 6 gauge wiring. His solution also cured the problem for a number of owners who were experiencing starting problems. He took orders and made up $30 custom wiring sets for them and plans to market them on eBay soon. U2U me for details. You could try using a set of battery jumper cables between the battery - engine ground and battery - starter motor to see if there's a significant improvement. My guess is there will be.
The connection to the starting motor is another possible problem source as well. The rubber boot covering the connection collects water and causes corrosion. Try disassembling and cleaning it. | 
Shazaam!
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