My 2005 750 does not like to start. In fact it doesn't start a lot of the time, especially when I haven't ridden for a while, but also in-between services. When I choke it all the way, it acts like it doesn't even want to start. When I choke it half-way, it turns over, but doesn't catch. When I do get it to start up, it usually backfires. But it also backfires a lot when I take the throttle off on a downhill to coast. I am not a hugely mechanical person (obviously), so I'm wondering if any of the Vulcan gurus have ideas on what the problem might be. Any help or suggestions would be greatly appreciated. Thanks!