Has anyone installed and used the electricstarter gun for a 21cxp engine in an earthquake 3.5. I know they are kind of expensive, but so is a pull start. I have broke my pull string several times and have replaced the pull string with a larger string from a traxxes (with slight modification). Now I believe the springis broken, and the new pull start will come with a small pull string again. I guess if there was a pull start with a large pull string that would work on this engine I would probably go that route. Thanks</p>