New, left over 2013 GRiSO. From day one it has not run correctly, IMHO.
Took it back and they 'fixed' it. Got it home and was the same.
Took it back and they said the test ride showed it to be running normally.
Took demo GRiSO out as a comparison and it ran the same. Like crap.
Best description is a hesitation or stumble. Not a real miss as such. No backfiring. Enough of a presumably fuelling hiccup to make you take your weight on your arms. All rpms, all gears. I can hear it running it up in neutral to 4k, tried to show that to them - response was - you shouldn't do that.
Coming up on 600 miles so I'm going to have them do the first service and if that doesn't change anything, try a new tune.
I've had three other guys ride it with the same result - 'that can't be right'. Total of 160 years of riding experience agree on that, at least.
Any ideas would be appreciated. Do have new plugs and caps for after the 600 mile service.