I second r6demon's advice to "bake your cases" (until golden brown ;) ) while your crank and bearings are in the freezer. The bearings will literally drop in to the housings. Like I posted once before, make sure you buy genuine Kawasaki crank ball bearings if you are replacing them - I once had a match on aftermarket part numbers but the genuines have a bevelled inner race, and you won't be able to get the cases back together unless the bearings, cases and the crank all hug each other nice and snug. Maybe I am just a dumb cheapskate, but my local Kawasaki shop almost did the same thing with the non-genuine bearings...