you got it. but the 64 might be better for you because it is warm in LA and warm is less dense than cold, thus less oxygen. I like to jet my bike so that it runs a little better on a cold night so that I don't end up lean when I'm out blasting with my friends on said night. As said above the plug is your best indicator as to whats going on in the combustion chamber. You want the porcelain insulator to be the color of coffee with cream. not light tan and not dark brown.