Well assembly stopped I put my crankshaft and counter Ballance shaft in with new bearings and my counter Ballance shaft has up and down movement.when you turn the crank you can hear play in counter Ballance shaft,bought bearings for counter Ballance shaft from Eurosport,inc---part number sd-11054 but item description says nothing about bearing size std or oversize.got a big sticker that says aqua sport performance