The bike is a 1982 XT550J. I need to clean the head up but would like to get some advice on how to go about doing it. It's pretty bad, so what are your recommended techniques? I was going to stick with custom made tools and a lot of scotch brite. I was wondering, is soaking the head in soap and water an okay thing to do? Also.. feel free to comment on the condition of my valves. I'm going to clean and measure them to see if they really need to be replace, but wow the intake valves look bad! Thanks for any and all suggestions.