New member, long time lurker here.
I wanted to say thanks for the videos on the K200. They were fun and informative. Now I know what to expect when I open mine up.
I've had a K250 for a few years now, and I got it with a 3 prong already added, so I never had to do this.
I've just acquired a K200-A1 head and 2x15 cab...it looks to be an unmolested example of these amps, including a 2 pronged cord.
Nice work!