ok, so im coming from the darkside, as this is my first 2 stroke quad. i traded a nice polaris predator 500 for this banshee which is supposed to have a 421 kit in it. i believe the guy said it had 68mm pistons, and a +4 crank. either way, that doesnt matter. what matters is, i was riding today, sliding around turns in first and second gear, never really built up too much speed. long story short, it overheated. i didn't realize it was overheating until it was too late. the motor died, and wouldnt start back up. also through out a big bit of steam/smoke. it was windy and hard to tell the difference. so im pretty sure a piston or pistons seized into the cylinder. i have never tore down a motor on a quad before, so im wondering what i should be looking for. also, am i looking at a complete new top end or just rings or??? like i said, i have never blown anything up before so i have never had to know what to look for. any help would be greatly appreciated. thanx.