Ron.
Three things.
Return line, Wood spacer, reroute away from the header side as much as possible.
I have mine running along the stock under side and then it snakes up the fender well as yours, but along the top of the fender well and towards the front. It then makes a very gradual u-turn back towards the carb using the gravity to help feed it. I'm using moderately expensive insulated XRP light weight line to keep it cool along with the return line at the regulator.
I also think that today's fuels would not even fire up my vintage Mini-bike, so I bite the bullet and run straight race fuel.