Rear end sway

[Triesandluth]

My buddy was riding with me the other day, said my rear end was swaying really bad around some of the corners on the parkway. I didn't pay it any mind until this morning. Doing about thirty, I moved the barslg left to right quickly and the tail sway was terrible. Almost scary. My other scooters don't give that much at all, even softer single shock setups.
Any one else have this issue? 2013 super 8 150.
Btw, here's a picture from the ride.

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[Mr. Paul]

Check your tire pressure and swing arm and shock bolts. You could be looking at a catastrophic failure. Best of luck.

[Stig / Major Tom]

Yep, I'd be putting it on center stand and yanking sideways at 3 & 9:00 o'clock and 12 & 6:00 o'clock on the rear wheel.
Checking every nut, bearings, bushings, etc., etc. back there...including engine mounts.
If scoot is relatively new I'd put my $$ on a loose piece of hardware - rather than a worn out bearing or bushing.
Certainly best to stay off it until you suss the problem.
Stig

[Triesandluth]

Thanks fellas. From visual inspection and what yanking I could do without weight on the bike it seems that everything checks out. The pressure seems okay, my home pressure gauge gave up the ghost a few weeks ago so I've playing off of feel.
This was a used bike with a very unknown history, bought from an impound yard. I've already came to the conclusion of it being in some kind of accident by the broken plastics, the original rotor being bent (already replaced), and the front forks having an issue getting stuck compressed on hard braking and hole hitting.
I originally bought this as a flip, then thought about keeping it, but I'm leaning back towards selling again now. I've rode it several days now, a pretty good distance, and am not satisfied by the ride and comfort. O can't figure out why, but it really is uncomfortable to me.
Anyways, thanks fellas, I'll post if I find anything unusual or the solution.

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[Mr. Paul]

Try the tire pressure with a guage. Scooter tires are thicker than bicycle tires so likely you cant tell a 10 lb difference by hand.