I have a Limited Roadster with a manual transmission. Sometimes it takes 2 or 3 attempts to get the car to start. When the key turns you hear the engine trying to fire up but it does not crank. Replaced the Crankshaft Position Sensor with an OEM one. it made no difference. Looking for advice before throwing more parts and money at it. The dealership was not able to recreate the problem and suggested the replacement of the CPS. I love the car and just need to sort out this quirk.