Well the interesting thing is I didn't adjust valve lash timing or carb. I pulled it out of the bush after 30 some years of it not being started. put diesel fuel down the spark plugs .Then an hour later fuel in the tank and a battery. Been running ever since . I never even cleaned the tank or fuel filters. 4000 miles on it since I started it up. I did wiring brake lines and cleaned up the rest of the brake system. What can I say it just wants to run. I figured it runs so nice why should I mess with it ?