Tricks for eliminating fuel boil

Have taken the Scamp out a couple times for around town cruises. After it gets good and warm start getting the telltale signs of vapor lock/ fuel boil. Edelbrock 1406. Came home yesterday and siphoned all the ethanol gas out of it. Filled it up with non ethanol gas. Went for another cruise today and was way better. However still had some stumbling at idle and cruise speed after it gets warm. Next I'm going to try the thick heat resistant gasket. What other tips do you guys have? Want to keep the car looking as factory as possible under the hood, and don't want to run an electric pump. I will try a Holley carburetor, though. Thanks!