Here is the oil pan during the process...before I did anything, I let it soak in my solvent tank overnight, and scrubbed it clean to remove the oil, grease and grime.  What you see above left is right after that.  The middle picture is what it looks like after a trip through the blasting cabinet.  The far right is the same pan painted with my favorite aluminum paint, "Alumiblast" by Seymore Paint.

The upper and lower engine cases went through the same process...if you go back and view the teardown, you can see what these used to look like.  Both were soaked overnight in the solvent tank, scrubbed, cleaned, degreased, and rinsed and pressure-washed.  Then into the blasting cabinet, and finally a new coat of paint.  Makes 'em look new again!

Below, you can the before and after media blasting.  I'm using 80 grit glass bead in my cabinet...it doesn't harm the soft aluminum like aluminum oxide would, but it does a great job removing light rust and corrosion.  The metal bracket and screws retain the neutral-indicator switch and a harness retainer.  They look just like new again!

As always, when installing any internal components that won't be accessible once the cases are mated, I use blue threadlock to ensure that the screws won't back out and get into the moving parts.  This is a machine screw that holds an oil channel guide in place.  Below it, a bit out of focus, is another oil-splash shield held in place with another machine screw.  They are more like sheet-metal screws, but quite a bit stronger.

Below, I'm getting ready to set the crankshaft in place.  Next to the bearing surface is a recess for the oil seals on each end of the crank.  These are in good condition, so I didn't bother replacing them, heck, I didn't even check to see if I could get them from the dealer.  However, as you can see, I'm putting some black RTV Silicone sealer around them for some added insurance against leaks.  The crankshaft is now in place, so the next step is to prep the mating surfaces with a slight coating of silicone sealer and slap them together.

Assembly thus far...I put the old clutch cover on to protect the clutch basket from dirt and dust while working on the other parts of the bike.  Remaining things to do:  Head rework, valve job, bore and hone cylinder block, bead blast and paint head, valve cover, and block, and polish up all of the aluminum side covers and assemble.