Motorcycle gas tank rusted inside

USE ELECTROLYSIS. I recently got this bike for free and decided to just fix it myself. One of the major problems was old gelled gas and rust inside the tank. I thought about getting it bead blasted but because of my budget decided to try myself first. I looked online and found out about electrolysis. Finally a use for chemistry class. All you need is a 8-12 volt battery charger, Washing soda (NOT baking soda, It must be sodium carbonate.) water, and a wire hanger ( or something similar). fill the tank to the top with water and 1/3 cups of the Sodium Carbonate. Rig the wire through something non conductive so that it can sit inside the tank without touching the tank (otherwise you'll see some fireworks). Try and bend the wire into some kind of fork shape to get maximum surface area for the rust to grab onto. Once the wire is in place connect the Positive charge to it and the Negative charge to the tank. Leave it for 1-2 days and then take out the wire and clean it, flush the tank with some clean water and start the proccess again. When the tank is clean get some POR15 sealant and make sure your tank is sealed so it won't rust again. For more detailed intsructions just google electrolysis and there is plenty of documentation.