Has anyone made an auxiliary fuel tank for the spider to get a longer range? I'm going on a large trip across north western United States from Detroit Michigan with two other motorcycles a Honda Gold wing in a Yamaha tannery they both can go 250 miles on one tank where my spider RS can only go 150!!! 15 years ago I plumbed in a 5 gallon gas tank on a rack into my vent line on my snowmobile and that gave me an extra 75 mile range!has anyone attempted such a feat??