ok
ignore the usual..tyres are stuffed..as you report them as ok
so
start with the basics....
is the front tyre/wheel square in the forks?
front brakes not rubbing?
is the front axle loose?
are the steering head bearings ok? not too loose, not too tight?
not worn and lubed correct?
frame not bent? cracked? crash damage?
are the bars/clips on secure? loose ones will make it nervous
is the rear wheel square in the swingarm?
ignore markings and use a ruler!
is the rear wheel in line with the front?
is the rear axle tight?
are the swing arm bearings ok? not loose so swing arm slops around...
are the wheel bearings ok (front or rear)
are the tyres on the right way? (don't laff it happens!!!)
just a few things to check....
cheers