sputter

Looking for a bit of help here. I ride my 2006 FZ6 as my daily commuter. Over the past couple of months it has developed a shutter/sputter/miss at low RPM (1000-2300), but only when the engine is up to normal temp. Most of the time I only notice it near the end of my 15 minute commute, but it...

I've been noticing lately that intermittently my bike will sputter between 1K and 2K, having trouble staying at a steady RPM in that range, it will bounce up and down. Any idea's of what could be the issue? I'm thinking maybe spark plugs, alternator, or regulator issues.