another plug for ?
Couple of things to check out.
1. if you seized the engine twice, mostly likely something is plugging a main jet. and causing seizures.
2 what ever is plugging your main jet is likely plugging your pilotjet/idle jet.
3. many of these 570 were close to tooo lean out of the box. if you run this sled slighlty lean with a full sized rider with low octane pump gas you are asking for trouble, dry seized piston.
Just this afternoon I stopped at a bon fire to shoot the chit with a big family of riders. Most all cat guys on new iron, well except one 8 year old on a 570 fan. He has seized it several times riding up real slow through the trees hard packed trail full of moguls at 1/16 throttle. Needs a bigger pilot jet and needle raised one notch.