Sorry I've been spreading my comments over two threads.
Here's my recent J300 thoughts:
http://www.gtsownersclub.co.uk/forum/viewtopic.php?f=6&t=10057I'll continue more general comments on the J300 there.
But re. clutch shudder, as I've said in the other thread, the J300 in question is a demo/trainer that's had learners riding the clutch doing figure eights for a lot of its 500 first miles and I've done 200 more including London rush hour, so it's maybe not surprising the clutch is suffering.
It's not something that reviewers could have come across, however, if there *was* a problem with a clutch. I'm doubting they pick a time or location when there is heavy traffic to do their test rides.
I think it's safe to say it shouldn't happen, but it may well not be something that all J300s will do. I'll know more when the first service and clutch fix has been done at the weekend.
Aside from this worry I'm loving the J300 - it's frankly fantastic for it's size (engine and body) - I never thought a 'midi' scooter would work for me, but it's still my main contender for replacing my SRV850 (even with the clutch problem, though I'd rather not be sanding the clutch bell every week, or whatever).
Maybe if I can lose 4 or 5 stone it won't be an issue... hehe