Modern Vespa

Hello,
Me again…

So after the 6k service I did, I am pretty sure the GTS did not vibrate like this. I did 10 miles max since and this is how it vibrates.

I don't really mind, it drives well, but I am confused: shouldn't the rear wheel spin freely when on the center stand, idling?

Thanks a million!

Edit: spin freely by hand, and new bearing on the exhaust support plate.

Yes that level of vibration is similar to my 2024 My23 gts300. If I put my gloves on the seat to do up my helmet, one or both will be on the floor within 10 seconds.