So I looked at a low milage ZX-6R today 9still trying to decide to go CBR600RR or ZX-6R for my first bike). It was a 07 with under 1k miles, owned by a guy who is deployed. Anyway, first thign I noticed once started was the engine noise. A CBR600RR is very smooth sounding. This, while it was very smooth and we had it idleing for around 10 minutes had a very noticable tick. Is this normal?