Two coats of VHT engine paint primer followed by three satin black coats. If I had to do it again I would have used Gunkote. VHT paint sucks; it's brittle and chips like crazy, and it doesn't resist fuel easily either.
Soda blasted the head. Trying to avoid grit in the blind oil galleys. The soda worked great, but it's not just a simple rinse with water and you are done aftermath. I scrubbed this head to within an inch of it's life before being confident of no more grit remaining behind.
Service manual calls for 1.0mm max valve seat width, but one side of the intake valves were at 1.5mm and the other 1.0. Kawasaki apparently was really sloppy with their machine work. Was trying to figure out what Neeway cutters to order when I decided to see that a 75* Suzuki cutter would do. Low and behold, it was the perfect size to narrow down the seat width. Learned that the valve seat angles for this head are not consistent because the 75* cutter only contacted the seat on the area as needed. Call it a gift from God on Christmas day. Happy now!
A local shop called Costa Mesa R&D cleaned up the valve faces for me. The owner is awesome and has lots of nifty videos on You Tube. He did the valves on the spot and only charged me $20. He had to cut them more than I thought they would need because they were not properly concentric. They are good to go now though...
Some guy on the KZ650 site sells these nifty neoprene clutch hub bumper thingies that really tighten up the clutch action. With the stock bumpers the clutch had quite a bit of play, but none with the new bumpers.
Primary drive cush hub dampers were crushed/shrinked some so there was play (lash). Had a dickens of a time getting my hands on these little buggers but had success in the end. I actually wound up with two sets (a long story)...
Struggled to get the charging system working as it should. Even though the no load AC voltage from the stator was over 70 VAC the stator output to the battery was only 13.7 volts at best. Wound up trying a couple different stators before realizing they were all bad. In the end I would up with a Ricks stator and bingo, 14.5 volts just like it should be.