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Ok, I have a Crankshaft upgrade query. Im in the process of installing a an ARIAS 856 big bore kit into my '96 YZF750R. I have all the piston side of things sorted now but Im a little worried about the extra power being put through the crank and rods. When I pulled the engine down it was already about to spin a big end and that was with stock ponies. I have sourced another engine to install the upgraded pistons/cylinders which has good bearing surfaces but still Im wondering if I should send the crank away to be cleaned up in some way. Nitrided again? polished? balanced? lightened? Rods also, should I get these polished and balanced and nitrided and all that or what? What do you think? Im pretty hard on engines. lotsa revs and plenty of wheelies which may have been the reason for nearly spinning the big end through lack of oil pick up. Should I mod the pick up somehow too???