Bill is right on about the paint and preparation...............I wish I had known some of those trick before I started doing custom work...........my avitar photo may interest you. It is a CL77 frame. The tank is vinyl so it is OK with modern fuel. I took a 3rd place trophy at the 2008 Mid-Ohio Cafe Show.
Old Scrambler, I have to apologize for not getting back on this, in a timely manner. I sure meant to tell you that the bike in your avatar, is tough and would like to see (and hear about) more of THAT one.
Feeling pretty good about now, I had previously gotten a CL head that is in Great shape, but I really wanted the CB head so I could run the tachometer. Now You, me and some others know that all you need to be able to drive the tach, is the left side of the can, along with the end plate with the hookup. Well< i had already come up with the endplate (complete with drive gear and all) AND just yesterday, I won the bid on all of the internals of a CB77 head. So, I'm getting closer to getting on with this one.
Finally!