The fuel tank opening is to tall and must be trimmed in order that the stopper will sit low enough to allow the fuel door to close completely. the new tanks are threaded and use a screw-on fuel cap that does not need to be modified. I trimmed 3/8 inches to get a perfect fit. Now I need to clean the tank from the dust and shavings.
shortened the opening by trimming about 5/16 inch.