runs fine in the lower gears but once i get to sixth gear and up to a hundred it feels really unsteady and i have to really puch it to go faster last season would go uppast like nothing...someone said it could be my tires beacuse i left it on the kickstand all winter...or could it be the engine? thanks!

 

when you shift into neutral,(at any speed) does it slow down quickly? maybe your brakes are rubbing? If its a handling issue only, check your suspension damping and rebound settings. Usually if you get a flat spot on your tires, it will work itself out within a few miles, when inflated to the proper pressure.

 

I would check the balance of the tires, take em off and bring em to a shop and see if there on the ball. could cause a very unsteady situation.

 

thanks guys im going to check the tires out and see whats up.