When I did mine, I used a new blade in a scraper handle, followed by a green Scotchbrite pad (by hand). This was with the studs removed for replacement. Besides ensuring you have nice new studs, replacing them makes the cleaning so much easier. Probably a wash time -wise. The hard to reach part of the head I just did with Scotchbrite, and used a mirror for inspection. I also cleaned the heater tube section that has the rubber which goes into the pump with the Scotchbrite. It all cleaned up pretty well for me. I installed the gasket dry, and used only water for the two rubber bits. Unfortunately while doing the job, I forgot the recommendation for silicone grease. Nevertheless, it all went well, and no leaks so far.