Re: gas tank giving me the blues
You could try making a shaped shim from something like a piece of 1"x2", using a jigsaw to cut an arc into it to match the curve of your top tube. The 'straight' edge the tank sits on might have to have the corners sanded/rounded down a little for a good fit to the tank.
Any day that starts with a good ride is already a better day, and a bad day riding still beats a good day working.
My Builds: My Beast
, Harley59's bike
, my Cruiser