PSD,
I'll add my two cents since I had a similar problem with the starter not turning over the engine. I put the battery (I don't know how old my battery was since it didn't have any date codes on it) on my 8 amp charger until the charger indicated that it was charged. The engine still didn't turn over. I took the battery to AutoZone and they gave it a load test. The battery passed the load test but the test also indicated that the battery had only 50% capacity. AutoZone put the battery on their charger for 45 minutes and load tested it again. The battery passed the load test but the test still indicated that the battery had only 50% capacity. I purchased a new battery with over 700 CCA (cold cranking amps) and my Crossfire turned over and started. It has started fine ever since. So, my two cents is to look at the battery capacity when you have the battery load tested. Crossfires seem to be very battery sensitive.