Yep, mine is too. It's not outrageously bad but it vibrates easily as much as the much more powerful YS 1.10. It's got a beautifully smooth idle though. 1500 - 1600 rpm and it doesn't miss a beat. Smooth as silk.

But at WOT, up around 9200 rpm, she starts blurring alright.

For Saito Club eyes: the LSN is as lean as I can get it before transition suffers.