Hey, newbie here i just broke the crank off under the clutch on my 98 zr 600 efi took motor apart and have alot of ??s on how to. the arctic cat dealer said he had a used crank for $150 but won't guarantee anything. i also have the pistons out and they are scratched as well as the jugs. looking for advise, i think its std bore still but it measures 77.78 mm with a caliper and i would think it would need 78 mm pistons? where is cheapest place for parts?