Yes, there is a resistor bypass system available- - - -use the 12 volt stomp start switch with the bypass terminal on the side. It bolts right onto a 6V starter if you're still using the early flywheel and starter.
http://thumbs2.ebaystatic.com/d/l225/m/mmY97ov2k5Tmjs-2KkoasWA.jpgWhy make things ridiculously complex when there's a simple solution? A fly that's swatted with a baseball bat is just as dead as one killed with a high-tech laser beam!
Jerry