I have a 2006 Infiniti G35 coupe with a manual transmission. Mileage is at 67,0000 and it drives fine. No problems. BUT sometimes when I'm driving I hear a grinding when I shift into the second gear and it ONLY happens in the second gear. Anyone have an idea what it might be? Like I said, it drives fine and theres no problem...just the noise bugs the s*** out of me and I dont want it to escalate into a bigger problem. Thanks guys.